HTMLを使った基本的なウェブページの設計とレイアウト
ウェブページをデザインし、効果的にコンテンツを表示するためには、HTML（HyperText Markup Language）を使うことが必要です。HTMLはウェブページを構成するための基本的な言語であり、ウェブコンテンツの構造を定義します。この記事では、基本的なHTMLページを作成する方法と、簡単なレイアウトを整える方法について詳しく解説します。
1. HTMLの基本構造
まず、HTMLページを作成するための基本的な構造を理解することが重要です。HTMLの基本的な構造は以下のようになります：
: この宣言は、HTML5文書であることをブラウザに伝えるために使用されます。: このタグはHTML文書の開始を示し、lang="ja"属性はこのページが日本語で書かれていることを示します。: メタ情報やスタイルシート（CSS）、スクリプト（JavaScript）などを含む部分です。: 文字コードをUTF-8に設定することで、日本語を含むさまざまな文字が正しく表示されるようにします。</code>: ブラウザのタブに表示されるウェブページのタイトルを設定します。</li> <li data-start="856" data-end="893"><code data-start="858" data-end="866"><body></code>: ウェブページの主要なコンテンツを記述する部分です。</li> </ul> <h4 data-start="895" data-end="916">2. 見出し、段落、リンクの作成</h4> <p data-start="918" data-end="981">HTMLでは、コンテンツを整理するためにいくつかの基本的なタグを使用します。これらを使って、テキストコンテンツを構造化します。</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 async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-3293364314201893" crossorigin="anonymous"></script> <!-- defults --> <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-3293364314201893" data-ad-slot="2303082872" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> </div> </div></div> <ul data-start="983" data-end="1430"> <li data-start="983" data-end="1158"> <p data-start="985" data-end="1008"><strong data-start="985" data-end="992">見出し</strong>（<code data-start="993" data-end="999"></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 async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-3293364314201893" crossorigin="anonymous"></script> <!-- defults --> <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-3293364314201893" data-ad-slot="2303082872" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> </div> </div></div> <h1></code>～<code data-start="1000" data-end="1006"></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 async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-3293364314201893" crossorigin="anonymous"></script> <!-- defults --> <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-3293364314201893" data-ad-slot="2303082872" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> </div> </div></div> <h6></code>）:</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 async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-3293364314201893" crossorigin="anonymous"></script> <!-- defults --> <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-3293364314201893" data-ad-slot="2303082872" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> </div> </div></div> <p data-start="1014" data-end="1085">見出しタグは、コンテンツを階層的に整理するために使われます。<code data-start="1044" data-end="1050"></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 async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-3293364314201893" crossorigin="anonymous"></script> <!-- defults --> <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-3293364314201893" data-ad-slot="2303082872" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> </div> </div></div> <h1></code>が最も重要な見出しで、<code data-start="1061" data-end="1067"></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 async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-3293364314201893" crossorigin="anonymous"></script> <!-- defults --> <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-3293364314201893" data-ad-slot="2303082872" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> </div> </div></div> <h6></code>が最も低いレベルの見出しとなります。</p> <pre class="!overflow-visible" data-start="1089" data-end="1158"><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>メイン見出し<span class="hljs-tag"></<span class="hljs-name">h1</span>></span> <span class="hljs-tag"><<span class="hljs-name">h2</span>></span>サブ見出し<span class="hljs-tag"></<span class="hljs-name">h2</span>></span> <span class="hljs-tag"><<span class="hljs-name">h3</span>></span>さらに詳細な見出し<span class="hljs-tag"></<span class="hljs-name">h3</span>></span> </span></code></div></div></pre> </li> <li data-start="1160" data-end="1292"> <p data-start="1162" data-end="1176"><strong data-start="1162" data-end="1168">段落</strong>（<code data-start="1169" data-end="1174"></p> <p></code>）:</p> <p data-start="1182" data-end="1229">テキストの段落を作成するために使用します。段落タグを使うことで、テキストが適切に区切られます。</p> <pre class="!overflow-visible" data-start="1233" data-end="1292"><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>これは段落の一例です。<span class="hljs-tag"></<span class="hljs-name">p</span>></span> <span class="hljs-tag"><<span class="hljs-name">p</span>></span>別の段落もここに記述できます。<span class="hljs-tag"></<span class="hljs-name">p</span>></span> </span></code></div></div></pre> </li> <li data-start="1294" data-end="1430"> <p data-start="1296" data-end="1311"><strong data-start="1296" data-end="1303">リンク</strong>（<code data-start="1304" data-end="1309"><a></code>）:</p> <p data-start="1317" data-end="1368">他のページやウェブサイトへのリンクを作成するために使用します。<code data-start="1348" data-end="1354">href</code>属性でリンク先を指定します。</p> <pre class="!overflow-visible" data-start="1372" data-end="1430"><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://example.com"</span>></span>こちらをクリック<span class="hljs-tag"></<span class="hljs-name">a</span>></span> </span></code></div></div></pre> </li> </ul> <h4 data-start="1432" data-end="1447">3. 画像の埋め込み</h4> <p data-start="1449" data-end="1558">HTMLでは画像をページに埋め込むことができます。画像は<code data-start="1477" data-end="1484"><img></code>タグを使って表示します。画像ファイルのパスを<code data-start="1506" data-end="1511">src</code>属性で指定し、画像が読み込まれなかった場合に表示する代替テキストは<code data-start="1544" data-end="1549">alt</code>属性で指定します。</p> <pre class="!overflow-visible" data-start="1560" data-end="1605"><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> <h4 data-start="1607" data-end="1621">4. リストの作成</h4> <p data-start="1623" data-end="1694">HTMLでは、リストを作成するためのタグもあります。順序付きリスト（番号付きリスト）と順序なしリスト（箇条書き）を使って、情報を整理できます。</p> <ul data-start="1696" data-end="2011"> <li data-start="1696" data-end="1856"> <p data-start="1698" data-end="1718"><strong data-start="1698" data-end="1709">順序なしリスト</strong>（<code data-start="1710" data-end="1716"></p> <ul></code>）:</p> <p data-start="1724" data-end="1761">順序なしリストは、リスト項目が順番に並ぶのではなく、順不同で表示されます。</p> <pre class="!overflow-visible" data-start="1765" data-end="1856"><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>アイテム1<span class="hljs-tag"></<span class="hljs-name">li</span>></span> <span class="hljs-tag"><<span class="hljs-name">li</span>></span>アイテム2<span class="hljs-tag"></<span class="hljs-name">li</span>></span> <span class="hljs-tag"><<span class="hljs-name">li</span>></span>アイテム3<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> </li> <li data-start="1858" data-end="2011"> <p data-start="1860" data-end="1880"><strong data-start="1860" data-end="1871">順序付きリスト</strong>（<code data-start="1872" data-end="1878"></p> <ol></code>）:</p> <p data-start="1886" data-end="1913">順序付きリストは、リスト項目が番号付きで表示されます。</p> <pre class="!overflow-visible" data-start="1917" data-end="2011"><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>1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>2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>3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> </li> </ul> <h4 data-start="2013" data-end="2028">5. テーブルの作成</h4> <p data-start="2030" data-end="2120">データを表形式で表示するために、HTMLではテーブルを作成することができます。テーブルは、<code data-start="2075" data-end="2084"></p> <table></code>, <code data-start="2086" data-end="2092"></p> <tr></code>, <code data-start="2094" data-end="2100"></p> <th></code>, <code data-start="2102" data-end="2108"></p> <td></code>タグを使って構成します。</p> <pre class="!overflow-visible" data-start="2122" data-end="2352"><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 class="hljs-attr">border</span>=<span class="hljs-string">"1"</span>></span> <span class="hljs-tag"><<span class="hljs-name">tr</span>></span> <span class="hljs-tag"><<span class="hljs-name">th</span>></span>ヘッダー1<span class="hljs-tag"></<span class="hljs-name">th</span>></span> <span class="hljs-tag"><<span class="hljs-name">th</span>></span>ヘッダー2<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>データ1<span class="hljs-tag"></<span class="hljs-name">td</span>></span> <span class="hljs-tag"><<span class="hljs-name">td</span>></span>データ2<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>データ3<span class="hljs-tag"></<span class="hljs-name">td</span>></span> <span class="hljs-tag"><<span class="hljs-name">td</span>></span>データ4<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> <ul data-start="2354" data-end="2460"> <li data-start="2354" data-end="2380"><code data-start="2356" data-end="2365"><br /> <table></code>: テーブル全体を定義します。</li> <li data-start="2381" data-end="2403"><code data-start="2383" data-end="2389"><br /> <tr></code>: テーブル行を定義します。</li> <li data-start="2404" data-end="2432"><code data-start="2406" data-end="2412"> <th></code>: テーブルのヘッダーセルを定義します。</li> <li data-start="2433" data-end="2460"><code data-start="2435" data-end="2441"> <td></code>: テーブルのデータセルを定義します。</li> </ul> <h4 data-start="2462" data-end="2477">6. フォームの作成</h4> <p data-start="2479" data-end="2540">ユーザーから情報を取得するために、HTMLフォームを使うことができます。フォームでは、入力フィールドやボタンを作成します。</p> <pre class="!overflow-visible" data-start="2542" data-end="2826"><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.php"</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> <span class="hljs-tag"><<span class="hljs-name">br</span>></span> <span class="hljs-tag"><<span class="hljs-name">label</span> <span class="hljs-attr">for</span>=<span class="hljs-string">"email"</span>></span>メールアドレス:<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">"email"</span> <span class="hljs-attr">id</span>=<span class="hljs-string">"email"</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"email"</span>></span> <span class="hljs-tag"><<span class="hljs-name">br</span>></span> <span class="hljs-tag"><<span class="hljs-name">input</span> <span class="hljs-attr">type</span>=<span class="hljs-string">"submit"</span> <span class="hljs-attr">value</span>=<span class="hljs-string">"送信"</span>></span> <span class="hljs-tag"></<span class="hljs-name">form</span>></span> </span></code></div></div></pre> <ul data-start="2828" data-end="2982"> <li data-start="2828" data-end="2853"><code data-start="2830" data-end="2838"><br /> <form></code>: フォーム全体を定義します。</li> <li data-start="2854" data-end="2944"><code data-start="2856" data-end="2865"><input></code>: ユーザーが入力するためのフィールドを定義します。<code data-start="2891" data-end="2897">type</code>属性でフィールドの種類を指定します（例：<code data-start="2917" data-end="2923">text</code>, <code data-start="2925" data-end="2932">email</code>, <code data-start="2934" data-end="2942">submit</code>）。</li> <li data-start="2945" data-end="2982"><code data-start="2947" data-end="2956"><label></code>: 入力フィールドにラベルを付けるために使用します。</li> </ul> <h4 data-start="2984" data-end="3004">7. スタイルの適用（CSS）</h4> <p data-start="3006" data-end="3180">HTMLだけでは、ウェブページの見た目は非常にシンプルです。スタイルを加えるためには、CSS（Cascading Style Sheets）を使用します。CSSはHTML要素のデザインやレイアウトを制御するために使用されます。スタイルは、<code data-start="3125" data-end="3134"></p> <style></code>タグを使って<code data-start="3140" data-end="3148"><head></code>内に記述するか、外部のCSSファイルをリンクすることができます。</p> <pre class="!overflow-visible" data-start="3182" data-end="3392"><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">head</span>></span> <span class="hljs-tag"><<span class="hljs-name">style</span>></span><span class="language-css"> <span class="hljs-selector-tag">body</span> { <span class="hljs-attribute">background-color</span>: <span class="hljs-number">#f0f0f0</span>; <span class="hljs-attribute">font-family</span>: Arial, sans-serif; } <span class="hljs-selector-tag">h1</span> { <span class="hljs-attribute">color</span>: <span class="hljs-number">#333333</span>; } </span><span class="hljs-tag"></<span class="hljs-name">style</span>></span> <span class="hljs-tag"></<span class="hljs-name">head</span>></span> </span></code></div></div></pre> <p data-start="3394" data-end="3436">この例では、<code data-start="3400" data-end="3406">body</code>タグの背景色を変更し、<code data-start="3417" data-end="3421">h1</code>タグの文字色を設定しています。</p> <h4 data-start="3438" data-end="3456">8. レスポンシブデザイン</h4> <p data-start="3458" data-end="3538">モバイルデバイスや異なる画面サイズに対応するためには、レスポンシブデザインが重要です。これを実現するために、<code data-start="3512" data-end="3518">meta</code>タグを使用してビューポートを設定します。</p> <pre class="!overflow-visible" data-start="3540" data-end="3622"><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">meta</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"viewport"</span> <span class="hljs-attr">content</span>=<span class="hljs-string">"width=device-width, initial-scale=1.0"</span>></span> </span></code></div></div></pre> <p data-start="3624" data-end="3660">これにより、ページが異なる画面サイズに自動的に調整されるようになります。</p> <h4 data-start="3662" data-end="3670">まとめ</h4> <p data-start="3672" data-end="3884" data-is-last-node="" data-is-only-node="">HTMLを使って基本的なウェブページを作成するための方法を学びました。見出し、段落、リンク、画像、リスト、テーブル、フォームなど、ウェブページの構成要素を理解し、実際にコードを記述してみてください。また、CSSを使用してデザインをカスタマイズし、レスポンシブデザインを取り入れて、さまざまなデバイスに対応できるページを作成することができます。これらの基本的な技術を組み合わせて、魅力的で機能的なウェブページを作成しましょう。</p> </div> </div> </div> </p> <div class="stream-item stream-item-below-post-content"><div class="stream-item-size" style=""> <div class="stream-item stream-item-in-post stream-item-in-post-1"><script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-3293364314201893" crossorigin="anonymous"></script> <!-- defults --> <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-3293364314201893" data-ad-slot="2303082872" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> 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<p class="cky-title" role="heading" aria-level="2" data-cky-tag="title" style="color:#212121">私たちは、お客様のプライバシーを大切にします</p><div class="cky-notice-group"> <div class="cky-notice-des" data-cky-tag="description" style="color:#212121"> <p>私たちは、お客様のブラウジング体験を向上させ、パーソナライズされた広告やコンテンツを提供し、当社のトラフィックを分析するためにクッキーを使用しています。「すべてのクッキーを受け入れる」をクリックすると、当社のクッキーの使用に同意したことになります。</p> </div><div class="cky-notice-btn-wrapper" data-cky-tag="notice-buttons"> <button class="cky-btn cky-btn-customize" aria-label="カスタマイズ" aria-haspopup="true" aria-controls="ckyPreferenceCenter" data-cky-tag="settings-button" style="color:#DC1830;background-color:transparent;border-color:#DC1830">カスタマイズ</button> <button class="cky-btn cky-btn-reject" aria-label="すべてのクッキーを拒否する" data-cky-tag="reject-button" style="color:#DC1830;background-color:transparent;border-color:#DC1830">すべてのクッキーを拒否する</button> <button class="cky-btn cky-btn-accept" aria-label="すべてのクッキーを受け入れる" data-cky-tag="accept-button" 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</p><p>また、当社は、お客様による本サイトの利用状況を分析し、お客様の好みを保存し、お客様に関連するコンテンツや広告を提供するために、サードパーティーのクッキーを使用しています。これらのクッキーは、お客様の事前の同意がある場合にのみ、お客様のブラウザに保存されます。</p><p>お客様は、これらのクッキーの一部、または全部を有効または無効にすることができますが、一部のクッキーを無効にすると、お客様のブラウジング体験に影響を与える場合があります。</p> </div><div class="cky-accordion-wrapper" data-cky-tag="detail-categories"> <div class="cky-accordion" id="ckyDetailCategorynecessary"> <div class="cky-accordion-item"> <div class="cky-accordion-chevron"><i class="cky-chevron-right"></i></div> <div class="cky-accordion-header-wrapper"> <div class="cky-accordion-header"><button class="cky-accordion-btn" aria-label="必須クッキー" data-cky-tag="detail-category-title" style="color:#212121">必須クッキー</button><span class="cky-always-active">常に効にする</span> <div class="cky-switch" data-cky-tag="detail-category-toggle"><input type="checkbox" id="ckySwitchnecessary"></div> </div> <div class="cky-accordion-header-des" data-cky-tag="detail-category-description" style="color:#212121"> <p>必須クッキーとは、安全なログインの提供や同意設定の調整など、このサイトの基本機能を有効にするために必要なクッキーです。これらのクッキーは、個人を特定できるようなデータを保存することはありません。</p></div> </div> </div> <div class="cky-accordion-body"> <div class="cky-audit-table" data-cky-tag="audit-table" style="color:#212121;background-color:#f4f4f4;border-color:#ebebeb"><p class="cky-empty-cookies-text">表示するクッキーがありません。</p></div> </div> </div><div class="cky-accordion" id="ckyDetailCategoryfunctional"> <div class="cky-accordion-item"> <div class="cky-accordion-chevron"><i class="cky-chevron-right"></i></div> <div class="cky-accordion-header-wrapper"> <div class="cky-accordion-header"><button class="cky-accordion-btn" aria-label="機能クッキー" data-cky-tag="detail-category-title" style="color:#212121">機能クッキー</button><span class="cky-always-active">常に効にする</span> <div class="cky-switch" data-cky-tag="detail-category-toggle"><input type="checkbox" id="ckySwitchfunctional"></div> </div> <div class="cky-accordion-header-des" data-cky-tag="detail-category-description" style="color:#212121"> <p>機能クッキーは、ソーシャルメディアプラットフォームでのウェブサイトのコンテンツの共有、フィードバックの収集、その他のサードパーティの機能など、特定の機能の実行をサポートします。</p></div> </div> </div> <div class="cky-accordion-body"> <div class="cky-audit-table" data-cky-tag="audit-table" style="color:#212121;background-color:#f4f4f4;border-color:#ebebeb"><p class="cky-empty-cookies-text">表示するクッキーがありません。</p></div> </div> </div><div class="cky-accordion" id="ckyDetailCategoryanalytics"> <div class="cky-accordion-item"> <div class="cky-accordion-chevron"><i class="cky-chevron-right"></i></div> <div class="cky-accordion-header-wrapper"> <div class="cky-accordion-header"><button class="cky-accordion-btn" aria-label="分析用クッキー" data-cky-tag="detail-category-title" style="color:#212121">分析用クッキー</button><span class="cky-always-active">常に効にする</span> <div class="cky-switch" data-cky-tag="detail-category-toggle"><input type="checkbox" id="ckySwitchanalytics"></div> </div> <div class="cky-accordion-header-des" data-cky-tag="detail-category-description" style="color:#212121"> <p>分析用クッキーは、訪問者がウェブサイトとどのように関わっているかを理解するために使用されます。これらのクッキーは、訪問者数、直帰率、トラフィックソースなどの指標に関する情報を提供することをサポートします。</p></div> </div> </div> <div class="cky-accordion-body"> <div class="cky-audit-table" data-cky-tag="audit-table" style="color:#212121;background-color:#f4f4f4;border-color:#ebebeb"><p class="cky-empty-cookies-text">表示するクッキーがありません。</p></div> </div> </div><div class="cky-accordion" id="ckyDetailCategoryperformance"> <div class="cky-accordion-item"> <div class="cky-accordion-chevron"><i class="cky-chevron-right"></i></div> <div class="cky-accordion-header-wrapper"> <div class="cky-accordion-header"><button class="cky-accordion-btn" aria-label="パフォーマンスクッキー" data-cky-tag="detail-category-title" style="color:#212121">パフォーマンスクッキー</button><span class="cky-always-active">常に効にする</span> <div class="cky-switch" data-cky-tag="detail-category-toggle"><input type="checkbox" id="ckySwitchperformance"></div> </div> <div class="cky-accordion-header-des" 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