Tạo chủ đề cho kiểu chữ

<!DOCTYPE html>
<html>
<head>
  <title>Typography Theming</title>
  <style>
    :root {
      /* Typography variables */
      --primary-font: "Georgia", serif;       /* for paragraphs */
      --secondary-font: "Arial", sans-serif; /* for headings */

    }

    body {
      font-family: var(--primary-font);
      color: #000000;
      line-height: 1.6;
      margin: 0;
      padding: 20px;
      background-color: #f9f9f9;
    }

    h1, h2 {
      font-family: var(--secondary-font);
      color: #000000;
      margin-bottom: 0.5em;
    }

    h1 {
      font-size: 16px;
    }

    h2 {
      font-size: 16px;
    }

    p {
      margin-bottom: 1.2em;
    }

    .blog-post {
      max-width: 700px;
      margin: 0 auto;
      background: #fff;
      padding: 2rem;
      border-radius: 10px;
      box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    }
  </style>
</head>
<body>
  <div class="blog-post">
    <h1>The Beauty of Typography in Web Design</h1>
    <p>Typography plays a crucial role in how users read and experience content online. A good choice of fonts and sizes can make a website more readable and enjoyable.</p>

    <h2>Why Typography Matters</h2>
    <p>Clear and consistent typography improves accessibility, creates a visual hierarchy, and gives your website a professional feel. Without it, even the best design can look unpolished.</p>

    <h2>Mobile-First Typography</h2>
    <p>Starting with smaller, readable text for mobile and scaling up for desktops ensures your content looks great on any device. This approach is part of mobile-first design and theming.</p>
  </div>
</body>
</html>