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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Chapter 12: CSS Syntax & Selectors</title>
  <link rel="stylesheet" href="style.css">
  <style>
    /* Element selector */
    p {
      color: darkblue;
    }

    /* ID selector */
    #special {
      color: crimson;
      font-weight: bold;
    }

    /* Class selector */
    .highlight {
      background-color: yellow;
    }

    /* Group selector */
    h4, h5 {
      color: green;
    }

    /* Universal selector */
    * {
      font-family: Arial, sans-serif;
    }
  </style>
</head>
<body>
  <h2 class="chapter-header">Chapter 12: CSS Syntax & Selectors</h2>

  <div class="tag-section">
    <h3>Element Selector</h3>
    <div class="tag-demo">
      <div class="head-demo">
        <p>This paragraph is styled using an element selector (p).</p>
      </div>
    </div>
  </div>

  <div class="tag-section">
    <h3>ID Selector</h3>
    <div class="tag-demo">
      <div class="head-demo">
        <p id="special">This text is styled using an ID selector (#special).</p>
      </div>
    </div>
  </div>

  <div class="tag-section">
    <h3>Class Selector</h3>
    <div class="tag-demo">
      <div class="head-demo">
        <p class="highlight">This text is styled using a Class selector (.highlight).</p>
      </div>
    </div>
  </div>

  <div class="tag-section">
    <h3>Group Selector</h3>
    <div class="tag-demo">
      <div class="head-demo">
        <h4>This is an H4 heading styled by group selector.</h4>
        <h5>This is an H5 heading styled by group selector.</h5>
      </div>
    </div>
  </div>

  <div class="tag-section">
    <h3>Universal Selector</h3>
    <div class="tag-demo">
      <div class="head-demo">
        <p>All text on this page uses Arial font due to universal selector (*).</p>
      </div>
    </div>
  </div>
</body>
</html>