11html.html

<!DOCTYPE html>
<html lang="en">
<head>
<!-- Google tag (gtag.js) -->
<script async src="https://www.googletagmanager.com/gtag/js?id=G-D0ENCWPZL9"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag('js', new Date());

  gtag('config', 'G-D0ENCWPZL9');
</script>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <title>11. Semantic Elements in HTML</title>
  <style>
    * { margin: 0; padding: 0; box-sizing: border-box; }
    body {
      font-family: 'Segoe UI', sans-serif;
      background: #1cc9be;
      padding: 30px;
    }
    .container {
      background: rgba(255,255,255,0.3);
      padding: 25px;
      border-radius: 15px;
      max-width: 1000px;
      margin: auto;
      box-shadow: 0 8px 20px rgba(0,0,0,0.2);
    }
    h2, h3 {
      color: #180;
      margin-bottom: 15px;
    }
    p {
      font-size: 17px;
      margin-bottom: 12px;
      line-height: 1.5;
    }
    ul {
      margin: 10px 0 20px 20px;
    }
    textarea, iframe {
      width: 100%;
      height: 200px;
      font-size: 16px;
      padding: 10px;
      margin: 10px 0 20px;
      border-radius: 10px;
      border: 2px solid white;
      background: rgba(255,248,240,0.4);
      font-family: monospace;
    }
    button {
      background: #007bff;
      color: white;
      border: none;
      padding: 10px 20px;
      font-size: 15px;
      font-weight: 500;
      border-radius: 8px;
      cursor: pointer;
      margin-bottom: 25px;
      transition: all 0.3s ease-in-out;
      position: relative;
      overflow: hidden;
    }
    button:hover {
      box-shadow: 0 5px 12px rgba(0,0,0,0.2);
      transform: translateY(-2px);
    }
  </style>
</head>
<body>
  <div class="container">
    <h2>11. Semantic Elements in HTML</h2>

    <!-- Importance of Semantics -->
    <h3>I. Importance of Semantic Elements</h3>
    <p>Semantic elements HTML mein aise tags hote hain jo content ke meaning ko define karte hain. Yeh web pages ko:</p>
    <ul>
      <li><strong>More accessible</strong> banate hain for screen readers</li>
      <li><strong>Search engines</strong> ko content samajhne mein madad karte hain</li>
      <li><strong>Code ko readable aur maintainable</strong> banate hain</li>
    </ul>

    <!-- Common Semantic Tags -->
    <h3>II. Common Semantic Tags</h3>
    <ul>
      <li><strong>&lt;header&gt;</strong> – Page ya section ka introductory content</li>
      <li><strong>&lt;nav&gt;</strong> – Navigation links ke liye</li>
      <li><strong>&lt;main&gt;</strong> – Page ka primary content</li>
      <li><strong>&lt;section&gt;</strong> – Page ke different sections</li>
      <li><strong>&lt;article&gt;</strong> – Independent content block (e.g., blog post)</li>
      <li><strong>&lt;aside&gt;</strong> – Side content (ads, related links)</li>
      <li><strong>&lt;footer&gt;</strong> – Bottom area (author info, links, copyright)</li>
    </ul>

    <textarea id="code1">
<!DOCTYPE html>
<html>
  <body>
    <header>
      <h1>My Blog</h1>
    </header>

    <nav>
      <a href="#home">Home</a> |
      <a href="#posts">Posts</a>
    </nav>

    <main>
      <section>
        <article>
          <h2>First Blog Post</h2>
          <p>This is an article inside a section.</p>
        </article>
      </section>
      <aside>
        <p>Related Links or Ads here</p>
      </aside>
    </main>

    <footer>
      <p>&copy; 2025 by Dharmandra</p>
    </footer>
  </body>
</html>
    </textarea>
    <button onclick="runCode('code1', 'output1')">Run Code</button>
    <iframe id="output1"></iframe>
  </div>

  <script>
    function runCode(textareaId, iframeId) {
      const code = document.getElementById(textareaId).value;
      const iframe = document.getElementById(iframeId);
      const doc = iframe.contentDocument || iframe.contentWindow.document;
      doc.open();
      doc.write(code);
      doc.close();
    }
  </script>
</body>
</html>