HTML（Hypertext Markup Language）は、ウェブページの構造を作成するための基本的な言語です。HTMLを使用することで、テキスト、画像、リンク、フォーム、ビデオなど、ウェブページに必要な要素を配置し、ユーザーに視覚的に表示することができます。以下では、HTMLの基礎から応用までを包括的に解説します。
HTML文書は、基本的に次のような構造を持っています。
HTML5文書であることをブラウザに伝える宣言です。
HTML文書の開始を示すタグです。lang="ja"は日本語であることを示します。
ページに関するメタ情報を含むセクションです。タイトル、文字セット、外部CSSやJavaScriptファイルのリンクなどを含みます。
文字エンコードをUTF-8に設定するタグです。日本語を正しく表示するために重要です。
</code></h4>
<p data-start="762" data-end="789">ブラウザタブに表示されるページのタイトルを設定します。</p>
<h4 data-start="791" data-end="807">・<code data-start="797" data-end="805"><body></code></h4>
<p data-start="808" data-end="855">実際のコンテンツが含まれる部分です。テキスト、画像、リンク、フォームなどがここに記述されます。</p><div class="stream-item stream-item-in-post stream-item-inline-post aligncenter"><div class="stream-item-size" style="">
<div class="stream-item stream-item-in-post stream-item-in-post-1"><script type="text/javascript">
atOptions = {
'key' : '7bb24ee6397b7382b9d18f0dd42d9b6e',
'format' : 'iframe',
'height' : 90,
'width' : 728,
'params' : {}
};
</script>
<script type="text/javascript" src="//www.highperformanceformat.com/7bb24ee6397b7382b9d18f0dd42d9b6e/invoke.js"></script>
</div>
</div></div>
<h3 data-start="857" data-end="876">2. よく使われるHTMLタグ</h3>
<p data-start="878" data-end="911">HTMLには様々なタグがあります。以下はよく使われるタグの例です。</p>
<h4 data-start="913" data-end="924">・見出しタグ</h4>
<p data-start="925" data-end="1006">HTMLでは、<code data-start="932" data-end="938"></p><div class="stream-item stream-item-in-post stream-item-inline-post aligncenter"><div class="stream-item-size" style="">
<div class="stream-item stream-item-in-post stream-item-in-post-1"><script type="text/javascript">
atOptions = {
'key' : '7bb24ee6397b7382b9d18f0dd42d9b6e',
'format' : 'iframe',
'height' : 90,
'width' : 728,
'params' : {}
};
</script>
<script type="text/javascript" src="//www.highperformanceformat.com/7bb24ee6397b7382b9d18f0dd42d9b6e/invoke.js"></script>
</div>
</div></div>
<h1></code>から<code data-start="940" data-end="946"></p>
<h6></code>までの6段階の見出しタグを使うことができます。<code data-start="969" data-end="975"></p><div class="stream-item stream-item-in-post stream-item-inline-post aligncenter"><div class="stream-item-size" style="">
<div class="stream-item stream-item-in-post stream-item-in-post-1"><script type="text/javascript">
atOptions = {
'key' : '7bb24ee6397b7382b9d18f0dd42d9b6e',
'format' : 'iframe',
'height' : 90,
'width' : 728,
'params' : {}
};
</script>
<script type="text/javascript" src="//www.highperformanceformat.com/7bb24ee6397b7382b9d18f0dd42d9b6e/invoke.js"></script>
</div>
</div></div>
<h1></code>は最も重要な見出し、<code data-start="985" data-end="991"></p>
<h6></code>は最も低い重要度の見出しです。</p><div class="stream-item stream-item-in-post stream-item-inline-post aligncenter"><div class="stream-item-size" style="">
<div class="stream-item stream-item-in-post stream-item-in-post-1"><script type="text/javascript">
atOptions = {
'key' : '7bb24ee6397b7382b9d18f0dd42d9b6e',
'format' : 'iframe',
'height' : 90,
'width' : 728,
'params' : {}
};
</script>
<script type="text/javascript" src="//www.highperformanceformat.com/7bb24ee6397b7382b9d18f0dd42d9b6e/invoke.js"></script>
</div>
</div></div>
<pre class="!overflow-visible" data-start="1008" data-end="1066"><div class="contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950"><div class="flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-[5px] h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none">html</div><div class="sticky top-9 md:top-[5.75rem]"><div class="absolute bottom-0 right-2 flex h-9 items-center"><div class="flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary"><span class="" data-state="closed"><button class="flex gap-1 items-center select-none px-4 py-1" aria-label="Copy"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path fill-rule="evenodd" clip-rule="evenodd" d="M7 5C7 3.34315 8.34315 2 10 2H19C20.6569 2 22 3.34315 22 5V14C22 15.6569 20.6569 17 19 17H17V19C17 20.6569 15.6569 22 14 22H5C3.34315 22 2 20.6569 2 19V10C2 8.34315 3.34315 7 5 7H7V5ZM9 7H14C15.6569 7 17 8.34315 17 10V15H19C19.5523 15 20 14.5523 20 14V5C20 4.44772 19.5523 4 19 4H10C9.44772 4 9 4.44772 9 5V7ZM5 9C4.44772 9 4 9.44772 4 10V19C4 19.5523 4.44772 20 5 20H14C14.5523 20 15 19.5523 15 19V10C15 9.44772 14.5523 9 14 9H5Z" fill="currentColor"></path></svg>Copy</button></span><span class="" data-state="closed"><button class="flex select-none items-center gap-1"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path d="M2.5 5.5C4.3 5.2 5.2 4 5.5 2.5C5.8 4 6.7 5.2 8.5 5.5C6.7 5.8 5.8 7 5.5 8.5C5.2 7 4.3 5.8 2.5 5.5Z" fill="currentColor" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M5.66282 16.5231L5.18413 19.3952C5.12203 19.7678 5.09098 19.9541 5.14876 20.0888C5.19933 20.2067 5.29328 20.3007 5.41118 20.3512C5.54589 20.409 5.73218 20.378 6.10476 20.3159L8.97693 19.8372C9.72813 19.712 10.1037 19.6494 10.4542 19.521C10.7652 19.407 11.0608 19.2549 11.3343 19.068C11.6425 18.8575 11.9118 18.5882 12.4503 18.0497L20 10.5C21.3807 9.11929 21.3807 6.88071 20 5.5C18.6193 4.11929 16.3807 4.11929 15 5.5L7.45026 13.0497C6.91175 13.5882 6.6425 13.8575 6.43197 14.1657C6.24513 14.4392 6.09299 14.7348 5.97903 15.0458C5.85062 15.3963 5.78802 15.7719 5.66282 16.5231Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path><path d="M14.5 7L18.5 11" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path></svg>Edit</button></span></div></div></div><div class="overflow-y-auto p-4" dir="ltr"><code class="!whitespace-pre language-html"><span><span class="hljs-tag"><<span class="hljs-name">h1</span>></span>主見出し<span class="hljs-tag"></<span class="hljs-name">h1</span>></span>
<span class="hljs-tag"><<span class="hljs-name">h2</span>></span>副見出し<span class="hljs-tag"></<span class="hljs-name">h2</span>></span>
<span class="hljs-tag"><<span class="hljs-name">h3</span>></span>さらに小さな見出し<span class="hljs-tag"></<span class="hljs-name">h3</span>></span>
</span></code></div></div></pre>
<h4 data-start="1068" data-end="1085">・段落タグ（<code data-start="1079" data-end="1084"></p>
<p></code>）</h4>
<p data-start="1086" data-end="1106">段落を作成するために使用されるタグです。</p>
<pre class="!overflow-visible" data-start="1108" data-end="1140"><div class="contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950"><div class="flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-[5px] h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none">html</div><div class="sticky top-9 md:top-[5.75rem]"><div class="absolute bottom-0 right-2 flex h-9 items-center"><div class="flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary"><span class="" data-state="closed"><button class="flex gap-1 items-center select-none px-4 py-1" aria-label="Copy"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path fill-rule="evenodd" clip-rule="evenodd" d="M7 5C7 3.34315 8.34315 2 10 2H19C20.6569 2 22 3.34315 22 5V14C22 15.6569 20.6569 17 19 17H17V19C17 20.6569 15.6569 22 14 22H5C3.34315 22 2 20.6569 2 19V10C2 8.34315 3.34315 7 5 7H7V5ZM9 7H14C15.6569 7 17 8.34315 17 10V15H19C19.5523 15 20 14.5523 20 14V5C20 4.44772 19.5523 4 19 4H10C9.44772 4 9 4.44772 9 5V7ZM5 9C4.44772 9 4 9.44772 4 10V19C4 19.5523 4.44772 20 5 20H14C14.5523 20 15 19.5523 15 19V10C15 9.44772 14.5523 9 14 9H5Z" fill="currentColor"></path></svg>Copy</button></span><span class="" data-state="closed"><button class="flex select-none items-center gap-1"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path d="M2.5 5.5C4.3 5.2 5.2 4 5.5 2.5C5.8 4 6.7 5.2 8.5 5.5C6.7 5.8 5.8 7 5.5 8.5C5.2 7 4.3 5.8 2.5 5.5Z" fill="currentColor" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M5.66282 16.5231L5.18413 19.3952C5.12203 19.7678 5.09098 19.9541 5.14876 20.0888C5.19933 20.2067 5.29328 20.3007 5.41118 20.3512C5.54589 20.409 5.73218 20.378 6.10476 20.3159L8.97693 19.8372C9.72813 19.712 10.1037 19.6494 10.4542 19.521C10.7652 19.407 11.0608 19.2549 11.3343 19.068C11.6425 18.8575 11.9118 18.5882 12.4503 18.0497L20 10.5C21.3807 9.11929 21.3807 6.88071 20 5.5C18.6193 4.11929 16.3807 4.11929 15 5.5L7.45026 13.0497C6.91175 13.5882 6.6425 13.8575 6.43197 14.1657C6.24513 14.4392 6.09299 14.7348 5.97903 15.0458C5.85062 15.3963 5.78802 15.7719 5.66282 16.5231Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path><path d="M14.5 7L18.5 11" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path></svg>Edit</button></span></div></div></div><div class="overflow-y-auto p-4" dir="ltr"><code class="!whitespace-pre language-html"><span><span class="hljs-tag"><<span class="hljs-name">p</span>></span>これは段落のテキストです。<span class="hljs-tag"></<span class="hljs-name">p</span>></span>
</span></code></div></div></pre>
<h4 data-start="1142" data-end="1160">・リンクタグ（<code data-start="1154" data-end="1159"><a></code>）</h4>
<p data-start="1161" data-end="1193">他のウェブページやリソースへのリンクを作成するために使用します。</p>
<pre class="!overflow-visible" data-start="1195" data-end="1260"><div class="contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950"><div class="flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-[5px] h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none">html</div><div class="sticky top-9 md:top-[5.75rem]"><div class="absolute bottom-0 right-2 flex h-9 items-center"><div class="flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary"><span class="" data-state="closed"><button class="flex gap-1 items-center select-none px-4 py-1" aria-label="Copy"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path fill-rule="evenodd" clip-rule="evenodd" d="M7 5C7 3.34315 8.34315 2 10 2H19C20.6569 2 22 3.34315 22 5V14C22 15.6569 20.6569 17 19 17H17V19C17 20.6569 15.6569 22 14 22H5C3.34315 22 2 20.6569 2 19V10C2 8.34315 3.34315 7 5 7H7V5ZM9 7H14C15.6569 7 17 8.34315 17 10V15H19C19.5523 15 20 14.5523 20 14V5C20 4.44772 19.5523 4 19 4H10C9.44772 4 9 4.44772 9 5V7ZM5 9C4.44772 9 4 9.44772 4 10V19C4 19.5523 4.44772 20 5 20H14C14.5523 20 15 19.5523 15 19V10C15 9.44772 14.5523 9 14 9H5Z" fill="currentColor"></path></svg>Copy</button></span><span class="" data-state="closed"><button class="flex select-none items-center gap-1"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path d="M2.5 5.5C4.3 5.2 5.2 4 5.5 2.5C5.8 4 6.7 5.2 8.5 5.5C6.7 5.8 5.8 7 5.5 8.5C5.2 7 4.3 5.8 2.5 5.5Z" fill="currentColor" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M5.66282 16.5231L5.18413 19.3952C5.12203 19.7678 5.09098 19.9541 5.14876 20.0888C5.19933 20.2067 5.29328 20.3007 5.41118 20.3512C5.54589 20.409 5.73218 20.378 6.10476 20.3159L8.97693 19.8372C9.72813 19.712 10.1037 19.6494 10.4542 19.521C10.7652 19.407 11.0608 19.2549 11.3343 19.068C11.6425 18.8575 11.9118 18.5882 12.4503 18.0497L20 10.5C21.3807 9.11929 21.3807 6.88071 20 5.5C18.6193 4.11929 16.3807 4.11929 15 5.5L7.45026 13.0497C6.91175 13.5882 6.6425 13.8575 6.43197 14.1657C6.24513 14.4392 6.09299 14.7348 5.97903 15.0458C5.85062 15.3963 5.78802 15.7719 5.66282 16.5231Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path><path d="M14.5 7L18.5 11" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path></svg>Edit</button></span></div></div></div><div class="overflow-y-auto p-4" dir="ltr"><code class="!whitespace-pre language-html"><span><span class="hljs-tag"><<span class="hljs-name">a</span> <span class="hljs-attr">href</span>=<span class="hljs-string">"https://www.example.com"</span>></span>Exampleのウェブサイトへ<span class="hljs-tag"></<span class="hljs-name">a</span>></span>
</span></code></div></div></pre>
<h4 data-start="1262" data-end="1281">・画像タグ（<code data-start="1273" data-end="1280"><img></code>）</h4>
<p data-start="1282" data-end="1337">画像を埋め込むためのタグです。<code data-start="1297" data-end="1302">src</code>属性で画像のURLを指定し、<code data-start="1316" data-end="1321">alt</code>属性で代替テキストを設定します。</p>
<pre class="!overflow-visible" data-start="1339" data-end="1384"><div class="contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950"><div class="flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-[5px] h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none">html</div><div class="sticky top-9 md:top-[5.75rem]"><div class="absolute bottom-0 right-2 flex h-9 items-center"><div class="flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary"><span class="" data-state="closed"><button class="flex gap-1 items-center select-none px-4 py-1" aria-label="Copy"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path fill-rule="evenodd" clip-rule="evenodd" d="M7 5C7 3.34315 8.34315 2 10 2H19C20.6569 2 22 3.34315 22 5V14C22 15.6569 20.6569 17 19 17H17V19C17 20.6569 15.6569 22 14 22H5C3.34315 22 2 20.6569 2 19V10C2 8.34315 3.34315 7 5 7H7V5ZM9 7H14C15.6569 7 17 8.34315 17 10V15H19C19.5523 15 20 14.5523 20 14V5C20 4.44772 19.5523 4 19 4H10C9.44772 4 9 4.44772 9 5V7ZM5 9C4.44772 9 4 9.44772 4 10V19C4 19.5523 4.44772 20 5 20H14C14.5523 20 15 19.5523 15 19V10C15 9.44772 14.5523 9 14 9H5Z" fill="currentColor"></path></svg>Copy</button></span><span class="" data-state="closed"><button class="flex select-none items-center gap-1"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path d="M2.5 5.5C4.3 5.2 5.2 4 5.5 2.5C5.8 4 6.7 5.2 8.5 5.5C6.7 5.8 5.8 7 5.5 8.5C5.2 7 4.3 5.8 2.5 5.5Z" fill="currentColor" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M5.66282 16.5231L5.18413 19.3952C5.12203 19.7678 5.09098 19.9541 5.14876 20.0888C5.19933 20.2067 5.29328 20.3007 5.41118 20.3512C5.54589 20.409 5.73218 20.378 6.10476 20.3159L8.97693 19.8372C9.72813 19.712 10.1037 19.6494 10.4542 19.521C10.7652 19.407 11.0608 19.2549 11.3343 19.068C11.6425 18.8575 11.9118 18.5882 12.4503 18.0497L20 10.5C21.3807 9.11929 21.3807 6.88071 20 5.5C18.6193 4.11929 16.3807 4.11929 15 5.5L7.45026 13.0497C6.91175 13.5882 6.6425 13.8575 6.43197 14.1657C6.24513 14.4392 6.09299 14.7348 5.97903 15.0458C5.85062 15.3963 5.78802 15.7719 5.66282 16.5231Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path><path d="M14.5 7L18.5 11" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path></svg>Edit</button></span></div></div></div><div class="overflow-y-auto p-4" dir="ltr"><code class="!whitespace-pre language-html"><span><span class="hljs-tag"><<span class="hljs-name">img</span> <span class="hljs-attr">src</span>=<span class="hljs-string">"image.jpg"</span> <span class="hljs-attr">alt</span>=<span class="hljs-string">"説明文"</span> /></span>
</span></code></div></div></pre>
<h4 data-start="1386" data-end="1397">・リストタグ</h4>
<p data-start="1398" data-end="1466">HTMLには順序付きリスト（<code data-start="1412" data-end="1418"></p>
<ol></code>）と順序なしリスト（<code data-start="1428" data-end="1434"></p>
<ul></code>）があります。リスト項目は<code data-start="1447" data-end="1453"></p>
<li></code>タグを使用して作成します。</p>
<p data-start="1468" data-end="1482">順序付きリスト（番号付き）：</p>
<pre class="!overflow-visible" data-start="1484" data-end="1542"><div class="contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950"><div class="flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-[5px] h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none">html</div><div class="sticky top-9 md:top-[5.75rem]"><div class="absolute bottom-0 right-2 flex h-9 items-center"><div class="flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary"><span class="" data-state="closed"><button class="flex gap-1 items-center select-none px-4 py-1" aria-label="Copy"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path fill-rule="evenodd" clip-rule="evenodd" d="M7 5C7 3.34315 8.34315 2 10 2H19C20.6569 2 22 3.34315 22 5V14C22 15.6569 20.6569 17 19 17H17V19C17 20.6569 15.6569 22 14 22H5C3.34315 22 2 20.6569 2 19V10C2 8.34315 3.34315 7 5 7H7V5ZM9 7H14C15.6569 7 17 8.34315 17 10V15H19C19.5523 15 20 14.5523 20 14V5C20 4.44772 19.5523 4 19 4H10C9.44772 4 9 4.44772 9 5V7ZM5 9C4.44772 9 4 9.44772 4 10V19C4 19.5523 4.44772 20 5 20H14C14.5523 20 15 19.5523 15 19V10C15 9.44772 14.5523 9 14 9H5Z" fill="currentColor"></path></svg>Copy</button></span><span class="" data-state="closed"><button class="flex select-none items-center gap-1"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path d="M2.5 5.5C4.3 5.2 5.2 4 5.5 2.5C5.8 4 6.7 5.2 8.5 5.5C6.7 5.8 5.8 7 5.5 8.5C5.2 7 4.3 5.8 2.5 5.5Z" fill="currentColor" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M5.66282 16.5231L5.18413 19.3952C5.12203 19.7678 5.09098 19.9541 5.14876 20.0888C5.19933 20.2067 5.29328 20.3007 5.41118 20.3512C5.54589 20.409 5.73218 20.378 6.10476 20.3159L8.97693 19.8372C9.72813 19.712 10.1037 19.6494 10.4542 19.521C10.7652 19.407 11.0608 19.2549 11.3343 19.068C11.6425 18.8575 11.9118 18.5882 12.4503 18.0497L20 10.5C21.3807 9.11929 21.3807 6.88071 20 5.5C18.6193 4.11929 16.3807 4.11929 15 5.5L7.45026 13.0497C6.91175 13.5882 6.6425 13.8575 6.43197 14.1657C6.24513 14.4392 6.09299 14.7348 5.97903 15.0458C5.85062 15.3963 5.78802 15.7719 5.66282 16.5231Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path><path d="M14.5 7L18.5 11" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path></svg>Edit</button></span></div></div></div><div class="overflow-y-auto p-4" dir="ltr"><code class="!whitespace-pre language-html"><span><span class="hljs-tag"><<span class="hljs-name">ol</span>></span>
<span class="hljs-tag"><<span class="hljs-name">li</span>></span>一番目の項目<span class="hljs-tag"></<span class="hljs-name">li</span>></span>
<span class="hljs-tag"><<span class="hljs-name">li</span>></span>二番目の項目<span class="hljs-tag"></<span class="hljs-name">li</span>></span>
<span class="hljs-tag"></<span class="hljs-name">ol</span>></span>
</span></code></div></div></pre>
<p data-start="1544" data-end="1558">順序なしリスト（箇条書き）：</p>
<pre class="!overflow-visible" data-start="1560" data-end="1612"><div class="contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950"><div class="flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-[5px] h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none">html</div><div class="sticky top-9 md:top-[5.75rem]"><div class="absolute bottom-0 right-2 flex h-9 items-center"><div class="flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary"><span class="" data-state="closed"><button class="flex gap-1 items-center select-none px-4 py-1" aria-label="Copy"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path fill-rule="evenodd" clip-rule="evenodd" d="M7 5C7 3.34315 8.34315 2 10 2H19C20.6569 2 22 3.34315 22 5V14C22 15.6569 20.6569 17 19 17H17V19C17 20.6569 15.6569 22 14 22H5C3.34315 22 2 20.6569 2 19V10C2 8.34315 3.34315 7 5 7H7V5ZM9 7H14C15.6569 7 17 8.34315 17 10V15H19C19.5523 15 20 14.5523 20 14V5C20 4.44772 19.5523 4 19 4H10C9.44772 4 9 4.44772 9 5V7ZM5 9C4.44772 9 4 9.44772 4 10V19C4 19.5523 4.44772 20 5 20H14C14.5523 20 15 19.5523 15 19V10C15 9.44772 14.5523 9 14 9H5Z" fill="currentColor"></path></svg>Copy</button></span><span class="" data-state="closed"><button class="flex select-none items-center gap-1"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path d="M2.5 5.5C4.3 5.2 5.2 4 5.5 2.5C5.8 4 6.7 5.2 8.5 5.5C6.7 5.8 5.8 7 5.5 8.5C5.2 7 4.3 5.8 2.5 5.5Z" fill="currentColor" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M5.66282 16.5231L5.18413 19.3952C5.12203 19.7678 5.09098 19.9541 5.14876 20.0888C5.19933 20.2067 5.29328 20.3007 5.41118 20.3512C5.54589 20.409 5.73218 20.378 6.10476 20.3159L8.97693 19.8372C9.72813 19.712 10.1037 19.6494 10.4542 19.521C10.7652 19.407 11.0608 19.2549 11.3343 19.068C11.6425 18.8575 11.9118 18.5882 12.4503 18.0497L20 10.5C21.3807 9.11929 21.3807 6.88071 20 5.5C18.6193 4.11929 16.3807 4.11929 15 5.5L7.45026 13.0497C6.91175 13.5882 6.6425 13.8575 6.43197 14.1657C6.24513 14.4392 6.09299 14.7348 5.97903 15.0458C5.85062 15.3963 5.78802 15.7719 5.66282 16.5231Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path><path d="M14.5 7L18.5 11" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path></svg>Edit</button></span></div></div></div><div class="overflow-y-auto p-4" dir="ltr"><code class="!whitespace-pre language-html"><span><span class="hljs-tag"><<span class="hljs-name">ul</span>></span>
<span class="hljs-tag"><<span class="hljs-name">li</span>></span>項目1<span class="hljs-tag"></<span class="hljs-name">li</span>></span>
<span class="hljs-tag"><<span class="hljs-name">li</span>></span>項目2<span class="hljs-tag"></<span class="hljs-name">li</span>></span>
<span class="hljs-tag"></<span class="hljs-name">ul</span>></span>
</span></code></div></div></pre>
<h4 data-start="1614" data-end="1626">・テーブルタグ</h4>
<p data-start="1627" data-end="1698">データを表形式で表示するために使用します。<code data-start="1648" data-end="1657"></p>
<table></code>, <code data-start="1659" data-end="1665"></p>
<tr></code>, <code data-start="1667" data-end="1673"></p>
<td></code>, <code data-start="1675" data-end="1681"></p>
<th></code>タグを使ってテーブルを作成します。</p>
<pre class="!overflow-visible" data-start="1700" data-end="1869"><div class="contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950"><div class="flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-[5px] h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none">html</div><div class="sticky top-9 md:top-[5.75rem]"><div class="absolute bottom-0 right-2 flex h-9 items-center"><div class="flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary"><span class="" data-state="closed"><button class="flex gap-1 items-center select-none px-4 py-1" aria-label="Copy"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path fill-rule="evenodd" clip-rule="evenodd" d="M7 5C7 3.34315 8.34315 2 10 2H19C20.6569 2 22 3.34315 22 5V14C22 15.6569 20.6569 17 19 17H17V19C17 20.6569 15.6569 22 14 22H5C3.34315 22 2 20.6569 2 19V10C2 8.34315 3.34315 7 5 7H7V5ZM9 7H14C15.6569 7 17 8.34315 17 10V15H19C19.5523 15 20 14.5523 20 14V5C20 4.44772 19.5523 4 19 4H10C9.44772 4 9 4.44772 9 5V7ZM5 9C4.44772 9 4 9.44772 4 10V19C4 19.5523 4.44772 20 5 20H14C14.5523 20 15 19.5523 15 19V10C15 9.44772 14.5523 9 14 9H5Z" fill="currentColor"></path></svg>Copy</button></span><span class="" data-state="closed"><button class="flex select-none items-center gap-1"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path d="M2.5 5.5C4.3 5.2 5.2 4 5.5 2.5C5.8 4 6.7 5.2 8.5 5.5C6.7 5.8 5.8 7 5.5 8.5C5.2 7 4.3 5.8 2.5 5.5Z" fill="currentColor" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M5.66282 16.5231L5.18413 19.3952C5.12203 19.7678 5.09098 19.9541 5.14876 20.0888C5.19933 20.2067 5.29328 20.3007 5.41118 20.3512C5.54589 20.409 5.73218 20.378 6.10476 20.3159L8.97693 19.8372C9.72813 19.712 10.1037 19.6494 10.4542 19.521C10.7652 19.407 11.0608 19.2549 11.3343 19.068C11.6425 18.8575 11.9118 18.5882 12.4503 18.0497L20 10.5C21.3807 9.11929 21.3807 6.88071 20 5.5C18.6193 4.11929 16.3807 4.11929 15 5.5L7.45026 13.0497C6.91175 13.5882 6.6425 13.8575 6.43197 14.1657C6.24513 14.4392 6.09299 14.7348 5.97903 15.0458C5.85062 15.3963 5.78802 15.7719 5.66282 16.5231Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path><path d="M14.5 7L18.5 11" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path></svg>Edit</button></span></div></div></div><div class="overflow-y-auto p-4" dir="ltr"><code class="!whitespace-pre language-html"><span><span class="hljs-tag"><<span class="hljs-name">table</span>></span>
<span class="hljs-tag"><<span class="hljs-name">tr</span>></span>
<span class="hljs-tag"><<span class="hljs-name">th</span>></span>名前<span class="hljs-tag"></<span class="hljs-name">th</span>></span>
<span class="hljs-tag"><<span class="hljs-name">th</span>></span>年齢<span class="hljs-tag"></<span class="hljs-name">th</span>></span>
<span class="hljs-tag"></<span class="hljs-name">tr</span>></span>
<span class="hljs-tag"><<span class="hljs-name">tr</span>></span>
<span class="hljs-tag"><<span class="hljs-name">td</span>></span>田中<span class="hljs-tag"></<span class="hljs-name">td</span>></span>
<span class="hljs-tag"><<span class="hljs-name">td</span>></span>25<span class="hljs-tag"></<span class="hljs-name">td</span>></span>
<span class="hljs-tag"></<span class="hljs-name">tr</span>></span>
<span class="hljs-tag"><<span class="hljs-name">tr</span>></span>
<span class="hljs-tag"><<span class="hljs-name">td</span>></span>鈴木<span class="hljs-tag"></<span class="hljs-name">td</span>></span>
<span class="hljs-tag"><<span class="hljs-name">td</span>></span>30<span class="hljs-tag"></<span class="hljs-name">td</span>></span>
<span class="hljs-tag"></<span class="hljs-name">tr</span>></span>
<span class="hljs-tag"></<span class="hljs-name">table</span>></span>
</span></code></div></div></pre>
<h3 data-start="1871" data-end="1885">3. HTMLの属性</h3>
<p data-start="1887" data-end="1935">HTMLタグには、動作や表示を調整するための「属性」を設定できます。以下はよく使われる属性です。</p>
<h4 data-start="1937" data-end="1952">・<code data-start="1943" data-end="1950">class</code>属性</h4>
<p data-start="1953" data-end="1981">複数の要素に共通のスタイルを適用するために使用されます。</p>
<pre class="!overflow-visible" data-start="1983" data-end="2033"><div class="contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950"><div class="flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-[5px] h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none">html</div><div class="sticky top-9 md:top-[5.75rem]"><div class="absolute bottom-0 right-2 flex h-9 items-center"><div class="flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary"><span class="" data-state="closed"><button class="flex gap-1 items-center select-none px-4 py-1" aria-label="Copy"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path fill-rule="evenodd" clip-rule="evenodd" d="M7 5C7 3.34315 8.34315 2 10 2H19C20.6569 2 22 3.34315 22 5V14C22 15.6569 20.6569 17 19 17H17V19C17 20.6569 15.6569 22 14 22H5C3.34315 22 2 20.6569 2 19V10C2 8.34315 3.34315 7 5 7H7V5ZM9 7H14C15.6569 7 17 8.34315 17 10V15H19C19.5523 15 20 14.5523 20 14V5C20 4.44772 19.5523 4 19 4H10C9.44772 4 9 4.44772 9 5V7ZM5 9C4.44772 9 4 9.44772 4 10V19C4 19.5523 4.44772 20 5 20H14C14.5523 20 15 19.5523 15 19V10C15 9.44772 14.5523 9 14 9H5Z" fill="currentColor"></path></svg>Copy</button></span><span class="" data-state="closed"><button class="flex select-none items-center gap-1"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path d="M2.5 5.5C4.3 5.2 5.2 4 5.5 2.5C5.8 4 6.7 5.2 8.5 5.5C6.7 5.8 5.8 7 5.5 8.5C5.2 7 4.3 5.8 2.5 5.5Z" fill="currentColor" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M5.66282 16.5231L5.18413 19.3952C5.12203 19.7678 5.09098 19.9541 5.14876 20.0888C5.19933 20.2067 5.29328 20.3007 5.41118 20.3512C5.54589 20.409 5.73218 20.378 6.10476 20.3159L8.97693 19.8372C9.72813 19.712 10.1037 19.6494 10.4542 19.521C10.7652 19.407 11.0608 19.2549 11.3343 19.068C11.6425 18.8575 11.9118 18.5882 12.4503 18.0497L20 10.5C21.3807 9.11929 21.3807 6.88071 20 5.5C18.6193 4.11929 16.3807 4.11929 15 5.5L7.45026 13.0497C6.91175 13.5882 6.6425 13.8575 6.43197 14.1657C6.24513 14.4392 6.09299 14.7348 5.97903 15.0458C5.85062 15.3963 5.78802 15.7719 5.66282 16.5231Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path><path d="M14.5 7L18.5 11" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path></svg>Edit</button></span></div></div></div><div class="overflow-y-auto p-4" dir="ltr"><code class="!whitespace-pre language-html"><span><span class="hljs-tag"><<span class="hljs-name">p</span> <span class="hljs-attr">class</span>=<span class="hljs-string">"important"</span>></span>これは重要なテキストです。<span class="hljs-tag"></<span class="hljs-name">p</span>></span>
</span></code></div></div></pre>
<h4 data-start="2035" data-end="2047">・<code data-start="2041" data-end="2045">id</code>属性</h4>
<p data-start="2048" data-end="2075">HTML内で一意の識別子を設定するために使用されます。</p>
<pre class="!overflow-visible" data-start="2077" data-end="2121"><div class="contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950"><div class="flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-[5px] h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none">html</div><div class="sticky top-9 md:top-[5.75rem]"><div class="absolute bottom-0 right-2 flex h-9 items-center"><div class="flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary"><span class="" data-state="closed"><button class="flex gap-1 items-center select-none px-4 py-1" aria-label="Copy"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path fill-rule="evenodd" clip-rule="evenodd" d="M7 5C7 3.34315 8.34315 2 10 2H19C20.6569 2 22 3.34315 22 5V14C22 15.6569 20.6569 17 19 17H17V19C17 20.6569 15.6569 22 14 22H5C3.34315 22 2 20.6569 2 19V10C2 8.34315 3.34315 7 5 7H7V5ZM9 7H14C15.6569 7 17 8.34315 17 10V15H19C19.5523 15 20 14.5523 20 14V5C20 4.44772 19.5523 4 19 4H10C9.44772 4 9 4.44772 9 5V7ZM5 9C4.44772 9 4 9.44772 4 10V19C4 19.5523 4.44772 20 5 20H14C14.5523 20 15 19.5523 15 19V10C15 9.44772 14.5523 9 14 9H5Z" fill="currentColor"></path></svg>Copy</button></span><span class="" data-state="closed"><button class="flex select-none items-center gap-1"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path d="M2.5 5.5C4.3 5.2 5.2 4 5.5 2.5C5.8 4 6.7 5.2 8.5 5.5C6.7 5.8 5.8 7 5.5 8.5C5.2 7 4.3 5.8 2.5 5.5Z" fill="currentColor" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M5.66282 16.5231L5.18413 19.3952C5.12203 19.7678 5.09098 19.9541 5.14876 20.0888C5.19933 20.2067 5.29328 20.3007 5.41118 20.3512C5.54589 20.409 5.73218 20.378 6.10476 20.3159L8.97693 19.8372C9.72813 19.712 10.1037 19.6494 10.4542 19.521C10.7652 19.407 11.0608 19.2549 11.3343 19.068C11.6425 18.8575 11.9118 18.5882 12.4503 18.0497L20 10.5C21.3807 9.11929 21.3807 6.88071 20 5.5C18.6193 4.11929 16.3807 4.11929 15 5.5L7.45026 13.0497C6.91175 13.5882 6.6425 13.8575 6.43197 14.1657C6.24513 14.4392 6.09299 14.7348 5.97903 15.0458C5.85062 15.3963 5.78802 15.7719 5.66282 16.5231Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path><path d="M14.5 7L18.5 11" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path></svg>Edit</button></span></div></div></div><div class="overflow-y-auto p-4" dir="ltr"><code class="!whitespace-pre language-html"><span><span class="hljs-tag"><<span class="hljs-name">div</span> <span class="hljs-attr">id</span>=<span class="hljs-string">"header"</span>></span>ここはヘッダー部分<span class="hljs-tag"></<span class="hljs-name">div</span>></span>
</span></code></div></div></pre>
<h4 data-start="2123" data-end="2138">・<code data-start="2129" data-end="2136">style</code>属性</h4>
<p data-start="2139" data-end="2163">要素にインラインCSSを適用するための属性です。</p>
<pre class="!overflow-visible" data-start="2165" data-end="2213"><div class="contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950"><div class="flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-[5px] h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none">html</div><div class="sticky top-9 md:top-[5.75rem]"><div class="absolute bottom-0 right-2 flex h-9 items-center"><div class="flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary"><span class="" data-state="closed"><button class="flex gap-1 items-center select-none px-4 py-1" aria-label="Copy"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path fill-rule="evenodd" clip-rule="evenodd" d="M7 5C7 3.34315 8.34315 2 10 2H19C20.6569 2 22 3.34315 22 5V14C22 15.6569 20.6569 17 19 17H17V19C17 20.6569 15.6569 22 14 22H5C3.34315 22 2 20.6569 2 19V10C2 8.34315 3.34315 7 5 7H7V5ZM9 7H14C15.6569 7 17 8.34315 17 10V15H19C19.5523 15 20 14.5523 20 14V5C20 4.44772 19.5523 4 19 4H10C9.44772 4 9 4.44772 9 5V7ZM5 9C4.44772 9 4 9.44772 4 10V19C4 19.5523 4.44772 20 5 20H14C14.5523 20 15 19.5523 15 19V10C15 9.44772 14.5523 9 14 9H5Z" fill="currentColor"></path></svg>Copy</button></span><span class="" data-state="closed"><button class="flex select-none items-center gap-1"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path d="M2.5 5.5C4.3 5.2 5.2 4 5.5 2.5C5.8 4 6.7 5.2 8.5 5.5C6.7 5.8 5.8 7 5.5 8.5C5.2 7 4.3 5.8 2.5 5.5Z" fill="currentColor" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M5.66282 16.5231L5.18413 19.3952C5.12203 19.7678 5.09098 19.9541 5.14876 20.0888C5.19933 20.2067 5.29328 20.3007 5.41118 20.3512C5.54589 20.409 5.73218 20.378 6.10476 20.3159L8.97693 19.8372C9.72813 19.712 10.1037 19.6494 10.4542 19.521C10.7652 19.407 11.0608 19.2549 11.3343 19.068C11.6425 18.8575 11.9118 18.5882 12.4503 18.0497L20 10.5C21.3807 9.11929 21.3807 6.88071 20 5.5C18.6193 4.11929 16.3807 4.11929 15 5.5L7.45026 13.0497C6.91175 13.5882 6.6425 13.8575 6.43197 14.1657C6.24513 14.4392 6.09299 14.7348 5.97903 15.0458C5.85062 15.3963 5.78802 15.7719 5.66282 16.5231Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path><path d="M14.5 7L18.5 11" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path></svg>Edit</button></span></div></div></div><div class="overflow-y-auto p-4" dir="ltr"><code class="!whitespace-pre language-html"><span><span class="hljs-tag"><<span class="hljs-name">p</span> <span class="hljs-attr">style</span>=<span class="hljs-string">"color: red;"</span>></span>赤いテキストです。<span class="hljs-tag"></<span class="hljs-name">p</span>></span>
</span></code></div></div></pre>
<h4 data-start="2215" data-end="2229">・<code data-start="2221" data-end="2227">href</code>属性</h4>
<p data-start="2230" data-end="2251"><code data-start="2230" data-end="2235"><a></code>タグの中でリンク先を指定します。</p>
<pre class="!overflow-visible" data-start="2253" data-end="2310"><div class="contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950"><div class="flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-[5px] h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none">html</div><div class="sticky top-9 md:top-[5.75rem]"><div class="absolute bottom-0 right-2 flex h-9 items-center"><div class="flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary"><span class="" data-state="closed"><button class="flex gap-1 items-center select-none px-4 py-1" aria-label="Copy"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path fill-rule="evenodd" clip-rule="evenodd" d="M7 5C7 3.34315 8.34315 2 10 2H19C20.6569 2 22 3.34315 22 5V14C22 15.6569 20.6569 17 19 17H17V19C17 20.6569 15.6569 22 14 22H5C3.34315 22 2 20.6569 2 19V10C2 8.34315 3.34315 7 5 7H7V5ZM9 7H14C15.6569 7 17 8.34315 17 10V15H19C19.5523 15 20 14.5523 20 14V5C20 4.44772 19.5523 4 19 4H10C9.44772 4 9 4.44772 9 5V7ZM5 9C4.44772 9 4 9.44772 4 10V19C4 19.5523 4.44772 20 5 20H14C14.5523 20 15 19.5523 15 19V10C15 9.44772 14.5523 9 14 9H5Z" fill="currentColor"></path></svg>Copy</button></span><span class="" data-state="closed"><button class="flex select-none items-center gap-1"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path d="M2.5 5.5C4.3 5.2 5.2 4 5.5 2.5C5.8 4 6.7 5.2 8.5 5.5C6.7 5.8 5.8 7 5.5 8.5C5.2 7 4.3 5.8 2.5 5.5Z" fill="currentColor" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M5.66282 16.5231L5.18413 19.3952C5.12203 19.7678 5.09098 19.9541 5.14876 20.0888C5.19933 20.2067 5.29328 20.3007 5.41118 20.3512C5.54589 20.409 5.73218 20.378 6.10476 20.3159L8.97693 19.8372C9.72813 19.712 10.1037 19.6494 10.4542 19.521C10.7652 19.407 11.0608 19.2549 11.3343 19.068C11.6425 18.8575 11.9118 18.5882 12.4503 18.0497L20 10.5C21.3807 9.11929 21.3807 6.88071 20 5.5C18.6193 4.11929 16.3807 4.11929 15 5.5L7.45026 13.0497C6.91175 13.5882 6.6425 13.8575 6.43197 14.1657C6.24513 14.4392 6.09299 14.7348 5.97903 15.0458C5.85062 15.3963 5.78802 15.7719 5.66282 16.5231Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path><path d="M14.5 7L18.5 11" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path></svg>Edit</button></span></div></div></div><div class="overflow-y-auto p-4" dir="ltr"><code class="!whitespace-pre language-html"><span><span class="hljs-tag"><<span class="hljs-name">a</span> <span class="hljs-attr">href</span>=<span class="hljs-string">"https://www.example.com"</span>></span>Example<span class="hljs-tag"></<span class="hljs-name">a</span>></span>
</span></code></div></div></pre>
<h3 data-start="2312" data-end="2325">4. フォームタグ</h3>
<p data-start="2327" data-end="2427">HTMLフォームは、ユーザーから情報を収集するために使われます。<code data-start="2359" data-end="2367"></p>
<form></code>, <code data-start="2369" data-end="2378"><input></code>, <code data-start="2380" data-end="2392"><textarea></code>, <code data-start="2394" data-end="2404"><select></code>, <code data-start="2406" data-end="2416"><button></code>などのタグがあります。</p>
<pre class="!overflow-visible" data-start="2429" data-end="2607"><div class="contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950"><div class="flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-[5px] h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none">html</div><div class="sticky top-9 md:top-[5.75rem]"><div class="absolute bottom-0 right-2 flex h-9 items-center"><div class="flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary"><span class="" data-state="closed"><button class="flex gap-1 items-center select-none px-4 py-1" aria-label="Copy"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path fill-rule="evenodd" clip-rule="evenodd" d="M7 5C7 3.34315 8.34315 2 10 2H19C20.6569 2 22 3.34315 22 5V14C22 15.6569 20.6569 17 19 17H17V19C17 20.6569 15.6569 22 14 22H5C3.34315 22 2 20.6569 2 19V10C2 8.34315 3.34315 7 5 7H7V5ZM9 7H14C15.6569 7 17 8.34315 17 10V15H19C19.5523 15 20 14.5523 20 14V5C20 4.44772 19.5523 4 19 4H10C9.44772 4 9 4.44772 9 5V7ZM5 9C4.44772 9 4 9.44772 4 10V19C4 19.5523 4.44772 20 5 20H14C14.5523 20 15 19.5523 15 19V10C15 9.44772 14.5523 9 14 9H5Z" fill="currentColor"></path></svg>Copy</button></span><span class="" data-state="closed"><button class="flex select-none items-center gap-1"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path d="M2.5 5.5C4.3 5.2 5.2 4 5.5 2.5C5.8 4 6.7 5.2 8.5 5.5C6.7 5.8 5.8 7 5.5 8.5C5.2 7 4.3 5.8 2.5 5.5Z" fill="currentColor" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M5.66282 16.5231L5.18413 19.3952C5.12203 19.7678 5.09098 19.9541 5.14876 20.0888C5.19933 20.2067 5.29328 20.3007 5.41118 20.3512C5.54589 20.409 5.73218 20.378 6.10476 20.3159L8.97693 19.8372C9.72813 19.712 10.1037 19.6494 10.4542 19.521C10.7652 19.407 11.0608 19.2549 11.3343 19.068C11.6425 18.8575 11.9118 18.5882 12.4503 18.0497L20 10.5C21.3807 9.11929 21.3807 6.88071 20 5.5C18.6193 4.11929 16.3807 4.11929 15 5.5L7.45026 13.0497C6.91175 13.5882 6.6425 13.8575 6.43197 14.1657C6.24513 14.4392 6.09299 14.7348 5.97903 15.0458C5.85062 15.3963 5.78802 15.7719 5.66282 16.5231Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path><path d="M14.5 7L18.5 11" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path></svg>Edit</button></span></div></div></div><div class="overflow-y-auto p-4" dir="ltr"><code class="!whitespace-pre language-html"><span><span class="hljs-tag"><<span class="hljs-name">form</span> <span class="hljs-attr">action</span>=<span class="hljs-string">"/submit"</span> <span class="hljs-attr">method</span>=<span class="hljs-string">"post"</span>></span>
<span class="hljs-tag"><<span class="hljs-name">label</span> <span class="hljs-attr">for</span>=<span class="hljs-string">"name"</span>></span>名前:<span class="hljs-tag"></<span class="hljs-name">label</span>></span>
<span class="hljs-tag"><<span class="hljs-name">input</span> <span class="hljs-attr">type</span>=<span class="hljs-string">"text"</span> <span class="hljs-attr">id</span>=<span class="hljs-string">"name"</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"name"</span> <span class="hljs-attr">required</span>></span>
<span class="hljs-tag"><<span class="hljs-name">button</span> <span class="hljs-attr">type</span>=<span class="hljs-string">"submit"</span>></span>送信<span class="hljs-tag"></<span class="hljs-name">button</span>></span>
<span class="hljs-tag"></<span class="hljs-name">form</span>></span>
</span></code></div></div></pre>
<h3 data-start="2609" data-end="2627">5. HTML5の新しい要素</h3>
<p data-start="2629" data-end="2696">HTML5では、意味論的により明確なタグが追加されました。これにより、ウェブページの構造がより理解しやすく、SEOにも有利になります。</p>
<h4 data-start="2698" data-end="2771">・<code data-start="2704" data-end="2714"></p>
<header></code>, <code data-start="2716" data-end="2726"></p>
<footer></code>, <code data-start="2728" data-end="2736"><main></code>, <code data-start="2738" data-end="2749"></p>
<section></code>, <code data-start="2751" data-end="2762"></p>
<article></code>, <code data-start="2764" data-end="2771"></p>
<nav></code></h4>
<p data-start="2773" data-end="2797">これらはページの異なる部分を表すためのタグです。</p>
<pre class="!overflow-visible" data-start="2799" data-end="2973"><div class="contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950"><div class="flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-[5px] h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none">html</div><div class="sticky top-9 md:top-[5.75rem]"><div class="absolute bottom-0 right-2 flex h-9 items-center"><div class="flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary"><span class="" data-state="closed"><button class="flex gap-1 items-center select-none px-4 py-1" aria-label="Copy"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path fill-rule="evenodd" clip-rule="evenodd" d="M7 5C7 3.34315 8.34315 2 10 2H19C20.6569 2 22 3.34315 22 5V14C22 15.6569 20.6569 17 19 17H17V19C17 20.6569 15.6569 22 14 22H5C3.34315 22 2 20.6569 2 19V10C2 8.34315 3.34315 7 5 7H7V5ZM9 7H14C15.6569 7 17 8.34315 17 10V15H19C19.5523 15 20 14.5523 20 14V5C20 4.44772 19.5523 4 19 4H10C9.44772 4 9 4.44772 9 5V7ZM5 9C4.44772 9 4 9.44772 4 10V19C4 19.5523 4.44772 20 5 20H14C14.5523 20 15 19.5523 15 19V10C15 9.44772 14.5523 9 14 9H5Z" fill="currentColor"></path></svg>Copy</button></span><span class="" data-state="closed"><button class="flex select-none items-center gap-1"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path d="M2.5 5.5C4.3 5.2 5.2 4 5.5 2.5C5.8 4 6.7 5.2 8.5 5.5C6.7 5.8 5.8 7 5.5 8.5C5.2 7 4.3 5.8 2.5 5.5Z" fill="currentColor" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M5.66282 16.5231L5.18413 19.3952C5.12203 19.7678 5.09098 19.9541 5.14876 20.0888C5.19933 20.2067 5.29328 20.3007 5.41118 20.3512C5.54589 20.409 5.73218 20.378 6.10476 20.3159L8.97693 19.8372C9.72813 19.712 10.1037 19.6494 10.4542 19.521C10.7652 19.407 11.0608 19.2549 11.3343 19.068C11.6425 18.8575 11.9118 18.5882 12.4503 18.0497L20 10.5C21.3807 9.11929 21.3807 6.88071 20 5.5C18.6193 4.11929 16.3807 4.11929 15 5.5L7.45026 13.0497C6.91175 13.5882 6.6425 13.8575 6.43197 14.1657C6.24513 14.4392 6.09299 14.7348 5.97903 15.0458C5.85062 15.3963 5.78802 15.7719 5.66282 16.5231Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path><path d="M14.5 7L18.5 11" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path></svg>Edit</button></span></div></div></div><div class="overflow-y-auto p-4" dir="ltr"><code class="!whitespace-pre language-html"><span><span class="hljs-tag"><<span class="hljs-name">header</span>></span>
<span class="hljs-tag"><<span class="hljs-name">h1</span>></span>サイトのヘッダー<span class="hljs-tag"></<span class="hljs-name">h1</span>></span>
<span class="hljs-tag"></<span class="hljs-name">header</span>></span>
<span class="hljs-tag"><<span class="hljs-name">main</span>></span>
<span class="hljs-tag"><<span class="hljs-name">article</span>></span>
<span class="hljs-tag"><<span class="hljs-name">h2</span>></span>記事タイトル<span class="hljs-tag"></<span class="hljs-name">h2</span>></span>
<span class="hljs-tag"><<span class="hljs-name">p</span>></span>記事の内容...<span class="hljs-tag"></<span class="hljs-name">p</span>></span>
<span class="hljs-tag"></<span class="hljs-name">article</span>></span>
<span class="hljs-tag"></<span class="hljs-name">main</span>></span>
<span class="hljs-tag"><<span class="hljs-name">footer</span>></span>
<span class="hljs-tag"><<span class="hljs-name">p</span>></span><span class="hljs-symbol">©</span> 2025 会社名<span class="hljs-tag"></<span class="hljs-name">p</span>></span>
<span class="hljs-tag"></<span class="hljs-name">footer</span>></span>
</span></code></div></div></pre>
<h3 data-start="2975" data-end="2995">6. HTMLのアクセシビリティ</h3>
<p data-start="2997" data-end="3088">アクセシビリティは、障害を持つユーザーにもウェブサイトを利用できるようにするために重要です。例えば、画像に代替テキストを追加したり、フォームのラベルを明確にしたりすることが必要です。</p>
<pre class="!overflow-visible" data-start="3090" data-end="3135"><div class="contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950"><div class="flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-[5px] h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none">html</div><div class="sticky top-9 md:top-[5.75rem]"><div class="absolute bottom-0 right-2 flex h-9 items-center"><div class="flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary"><span class="" data-state="closed"><button class="flex gap-1 items-center select-none px-4 py-1" aria-label="Copy"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path fill-rule="evenodd" clip-rule="evenodd" d="M7 5C7 3.34315 8.34315 2 10 2H19C20.6569 2 22 3.34315 22 5V14C22 15.6569 20.6569 17 19 17H17V19C17 20.6569 15.6569 22 14 22H5C3.34315 22 2 20.6569 2 19V10C2 8.34315 3.34315 7 5 7H7V5ZM9 7H14C15.6569 7 17 8.34315 17 10V15H19C19.5523 15 20 14.5523 20 14V5C20 4.44772 19.5523 4 19 4H10C9.44772 4 9 4.44772 9 5V7ZM5 9C4.44772 9 4 9.44772 4 10V19C4 19.5523 4.44772 20 5 20H14C14.5523 20 15 19.5523 15 19V10C15 9.44772 14.5523 9 14 9H5Z" fill="currentColor"></path></svg>Copy</button></span><span class="" data-state="closed"><button class="flex select-none items-center gap-1"><svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" class="icon-xs"><path d="M2.5 5.5C4.3 5.2 5.2 4 5.5 2.5C5.8 4 6.7 5.2 8.5 5.5C6.7 5.8 5.8 7 5.5 8.5C5.2 7 4.3 5.8 2.5 5.5Z" fill="currentColor" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"></path><path d="M5.66282 16.5231L5.18413 19.3952C5.12203 19.7678 5.09098 19.9541 5.14876 20.0888C5.19933 20.2067 5.29328 20.3007 5.41118 20.3512C5.54589 20.409 5.73218 20.378 6.10476 20.3159L8.97693 19.8372C9.72813 19.712 10.1037 19.6494 10.4542 19.521C10.7652 19.407 11.0608 19.2549 11.3343 19.068C11.6425 18.8575 11.9118 18.5882 12.4503 18.0497L20 10.5C21.3807 9.11929 21.3807 6.88071 20 5.5C18.6193 4.11929 16.3807 4.11929 15 5.5L7.45026 13.0497C6.91175 13.5882 6.6425 13.8575 6.43197 14.1657C6.24513 14.4392 6.09299 14.7348 5.97903 15.0458C5.85062 15.3963 5.78802 15.7719 5.66282 16.5231Z" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path><path d="M14.5 7L18.5 11" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path></svg>Edit</button></span></div></div></div><div class="overflow-y-auto p-4" dir="ltr"><code class="!whitespace-pre language-html"><span><span class="hljs-tag"><<span class="hljs-name">img</span> <span class="hljs-attr">src</span>=<span class="hljs-string">"image.jpg"</span> <span class="hljs-attr">alt</span>=<span class="hljs-string">"画像の説明"</span>></span>
</span></code></div></div></pre>
<h3 data-start="3137" data-end="3158">7. HTMLのベストプラクティス</h3>
<ul data-start="3160" data-end="3278">
<li data-start="3160" data-end="3178">HTMLタグは必ず適切に閉じる。</li>
<li data-start="3179" data-end="3205">インデントを適切に使用してコードを見やすく保つ。</li>
<li data-start="3206" data-end="3240">セマンティックタグを活用して、意味のあるウェブページ構造を作る。</li>
<li data-start="3241" data-end="3278">画像やリンクには代替テキストを設定して、アクセシビリティを向上させる。</li>
</ul>
<h3 data-start="3280" data-end="3286">結論</h3>
<p data-start="3288" data-end="3445" data-is-last-node="" data-is-only-node="">HTMLは、ウェブページを構築するための基本的なスキルです。タグや属性を理解し、HTML5の新しい要素を活用することで、より意味のある、視覚的にも魅力的なウェブページを作成することができます。HTMLは他の技術（CSSやJavaScript）と組み合わせて、さらに強力なウェブサイトを作成するための基盤となります。</p>
</div>
</div>
</div>
</p>
</div><!-- .entry-content /-->
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HTML\u306e\u5c5e\u6027HTML\u30bf\u30b0\u306b\u306f\u3001\u52d5\u4f5c\u3084\u8868\u793a\u3092\u8abf\u6574\u3059\u308b\u305f\u3081\u306e\u300c\u5c5e\u6027\u300d\u3092\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u3088\u304f\u4f7f\u308f\u308c\u308b\u5c5e\u6027\u3067\u3059\u3002\u30fbclass\u5c5e\u6027\u8907\u6570\u306e\u8981\u7d20\u306b\u5171\u901a\u306e\u30b9\u30bf\u30a4\u30eb\u3092\u9069\u7528\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002htmlCopyEdit\u3053\u308c\u306f\u91cd\u8981\u306a\u30c6\u30ad\u30b9\u30c8\u3067\u3059\u3002\n\u30fbid\u5c5e\u6027HTML\u5185\u3067\u4e00\u610f\u306e\u8b58\u5225\u5b50\u3092\u8a2d\u5b9a\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002htmlCopyEdit\u3053\u3053\u306f\u30d8\u30c3\u30c0\u30fc\u90e8\u5206\n\u30fbstyle\u5c5e\u6027\u8981\u7d20\u306b\u30a4\u30f3\u30e9\u30a4\u30f3CSS\u3092\u9069\u7528\u3059\u308b\u305f\u3081\u306e\u5c5e\u6027\u3067\u3059\u3002htmlCopyEdit\u8d64\u3044\u30c6\u30ad\u30b9\u30c8\u3067\u3059\u3002\n\u30fbhref\u5c5e\u6027\u30bf\u30b0\u306e\u4e2d\u3067\u30ea\u30f3\u30af\u5148\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002htmlCopyEditExample\n4. \u30d5\u30a9\u30fc\u30e0\u30bf\u30b0HTML\u30d5\u30a9\u30fc\u30e0\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u304b\u3089\u60c5\u5831\u3092\u53ce\u96c6\u3059\u308b\u305f\u3081\u306b\u4f7f\u308f\u308c\u307e\u3059\u3002, , , , \u306a\u3069\u306e\u30bf\u30b0\u304c\u3042\u308a\u307e\u3059\u3002htmlCopyEdit\n \u540d\u524d:\n \n \u9001\u4fe1\n\n5. HTML5\u306e\u65b0\u3057\u3044\u8981\u7d20HTML5\u3067\u306f\u3001\u610f\u5473\u8ad6\u7684\u306b\u3088\u308a\u660e\u78ba\u306a\u30bf\u30b0\u304c\u8ffd\u52a0\u3055\u308c\u307e\u3057\u305f\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30a6\u30a7\u30d6\u30da\u30fc\u30b8\u306e\u69cb\u9020\u304c\u3088\u308a\u7406\u89e3\u3057\u3084\u3059\u304f\u3001SEO\u306b\u3082\u6709\u5229\u306b\u306a\u308a\u307e\u3059\u3002\u30fb, , , , , \u3053\u308c\u3089\u306f\u30da\u30fc\u30b8\u306e\u7570\u306a\u308b\u90e8\u5206\u3092\u8868\u3059\u305f\u3081\u306e\u30bf\u30b0\u3067\u3059\u3002htmlCopyEdit\n \u30b5\u30a4\u30c8\u306e\u30d8\u30c3\u30c0\u30fc\n\n\n \n \u8a18\u4e8b\u30bf\u30a4\u30c8\u30eb\n \u8a18\u4e8b\u306e\u5185\u5bb9...\n \n\n\n © 2025 \u4f1a\u793e\u540d\n\n6. HTML\u306e\u30a2\u30af\u30bb\u30b7\u30d3\u30ea\u30c6\u30a3\u30a2\u30af\u30bb\u30b7\u30d3\u30ea\u30c6\u30a3\u306f\u3001\u969c\u5bb3\u3092\u6301\u3064\u30e6\u30fc\u30b6\u30fc\u306b\u3082\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3092\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u306b\u91cd\u8981\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001\u753b\u50cf\u306b\u4ee3\u66ff\u30c6\u30ad\u30b9\u30c8\u3092\u8ffd\u52a0\u3057\u305f\u308a\u3001\u30d5\u30a9\u30fc\u30e0\u306e\u30e9\u30d9\u30eb\u3092\u660e\u78ba\u306b\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u5fc5\u8981\u3067\u3059\u3002htmlCopyEdit\n7. HTML\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9HTML\u30bf\u30b0\u306f\u5fc5\u305a\u9069\u5207\u306b\u9589\u3058\u308b\u3002\u30a4\u30f3\u30c7\u30f3\u30c8\u3092\u9069\u5207\u306b\u4f7f\u7528\u3057\u3066\u30b3\u30fc\u30c9\u3092\u898b\u3084\u3059\u304f\u4fdd\u3064\u3002\u30bb\u30de\u30f3\u30c6\u30a3\u30c3\u30af\u30bf\u30b0\u3092\u6d3b\u7528\u3057\u3066\u3001\u610f\u5473\u306e\u3042\u308b\u30a6\u30a7\u30d6\u30da\u30fc\u30b8\u69cb\u9020\u3092\u4f5c\u308b\u3002\u753b\u50cf\u3084\u30ea\u30f3\u30af\u306b\u306f\u4ee3\u66ff\u30c6\u30ad\u30b9\u30c8\u3092\u8a2d\u5b9a\u3057\u3066\u3001\u30a2\u30af\u30bb\u30b7\u30d3\u30ea\u30c6\u30a3\u3092\u5411\u4e0a\u3055\u305b\u308b\u3002\u7d50\u8ad6HTML\u306f\u3001\u30a6\u30a7\u30d6\u30da\u30fc\u30b8\u3092\u69cb\u7bc9\u3059\u308b\u305f\u3081\u306e\u57fa\u672c\u7684\u306a\u30b9\u30ad\u30eb\u3067\u3059\u3002\u30bf\u30b0\u3084\u5c5e\u6027\u3092\u7406\u89e3\u3057\u3001HTML5\u306e\u65b0\u3057\u3044\u8981\u7d20\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u610f\u5473\u306e\u3042\u308b\u3001\u8996\u899a\u7684\u306b\u3082\u9b45\u529b\u7684\u306a\u30a6\u30a7\u30d6\u30da\u30fc\u30b8\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002HTML\u306f\u4ed6\u306e\u6280\u8853\uff08CSS\u3084JavaScript\uff09\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u3001\u3055\u3089\u306b\u5f37\u529b\u306a\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u57fa\u76e4\u3068\u306a\u308a\u307e\u3059\u3002","publisher":{"@id":"#Publisher","@type":"Organization","name":"\u6587\u5316","logo":{"@type":"ImageObject","url":"https:\/\/bunkao.com\/wp-content\/themes\/jannah\/assets\/images\/logo@2x.png"}},"sourceOrganization":{"@id":"#Publisher"},"copyrightHolder":{"@id":"#Publisher"},"mainEntityOfPage":{"@type":"WebPage","@id":"https:\/\/bunkao.com\/html%e3%81%ae%e5%9f%ba%e6%9c%ac%e3%81%a8%e6%b4%bb%e7%94%a8%e6%b3%95-3\/","breadcrumb":{"@id":"#Breadcrumb"}},"author":{"@type":"Person","name":"admin","url":"https:\/\/bunkao.com\/author\/admin\/"},"image":{"@type":"ImageObject","url":"https:\/\/bunkao.com\/wp-content\/uploads\/2025\/02\/Flag_of_Japan.png","width":2000,"height":1334}}</script>
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