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Semantic HTML5 elements and accessibility best practices

Alex Chang Feb 2026
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  <title>Semantic HTML Example</title>
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        <h1>Understanding Semantic HTML</h1>
        <p>Published on <time datetime="2026-02-04">February 4, 2026</time></p>
        <p>By <a href="/author/alex">Alex Chen</a></p>
      </header>

      <section>
        <h2>What is Semantic HTML?</h2>
        <p>Semantic HTML uses elements that clearly describe their meaning
        to both the browser and the developer.</p>

        <!-- Figure with caption -->
        <figure>
          <img src="semantic-html.jpg" alt="Diagram showing semantic HTML structure">
          <figcaption>Semantic HTML element hierarchy</figcaption>
        </figure>
      </section>

      <section>
        <h2>Benefits of Semantic Markup</h2>
        <ul>
          <li><strong>Accessibility:</strong> Screen readers understand content structure</li>
          <li><strong>SEO:</strong> Search engines better index your content</li>
          <li><strong>Maintainability:</strong> Code is easier to read and update</li>
        </ul>
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          <li><a href="/aria-guide">ARIA Roles Guide</a></li>
          <li><a href="/accessibility">Web Accessibility 101</a></li>
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2 files · html Explain with highlit

Semantic HTML uses meaningful elements like <header>, <nav>, <main>, <article>, and <footer> instead of generic <div> tags. I structure content with proper heading hierarchy (<h1> to <h6>). Semantic markup improves SEO by helping search engines understand content structure. Screen readers navigate better with semantic elements and ARIA attributes. The <section> element groups related content, while <article> represents self-contained composition. Using <button> for actions and <a> for navigation ensures proper keyboard interaction. The alt attribute on images provides text alternatives. Proper semantic HTML creates accessible, maintainable websites that work for everyone.