codesnips
html 236 lines · 2 tabs

Semantic HTML5 elements and accessibility best practices

Alex Chang Feb 2026
2 tabs 
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Semantic HTML Example</title>
</head>
<body>
  <!-- Header with site navigation -->
  <header>
    <nav aria-label="Main navigation">
      <ul>
        <li><a href="/">Home</a></li>
        <li><a href="/about">About</a></li>
        <li><a href="/blog">Blog</a></li>
        <li><a href="/contact">Contact</a></li>
      </ul>
    </nav>
  </header>

  <!-- Main content area -->
  <main>
    <!-- Article with proper heading hierarchy -->
    <article>
      <header>
        <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>
      </section>

      <aside>
        <h3>Related Articles</h3>
        <ul>
          <li><a href="/aria-guide">ARIA Roles Guide</a></li>
          <li><a href="/accessibility">Web Accessibility 101</a></li>
        </ul>
      </aside>
    </article>

    <!-- Another section with different content -->
    <section>
      <h2>Latest Blog Posts</h2>
      <article>
        <h3><a href="/post-1">CSS Grid Layout</a></h3>
        <p>Learn modern CSS Grid techniques...</p>
      </article>
      <article>
        <h3><a href="/post-2">JavaScript Async/Await</a></h3>
        <p>Master asynchronous JavaScript...</p>
      </article>
    </section>
  </main>

  <!-- Aside for supplementary content -->
  <aside aria-label="Sidebar">
    <section>
      <h2>Newsletter Signup</h2>
      <form>
        <label for="email">Email:</label>
        <input type="email" id="email" name="email" required>
        <button type="submit">Subscribe</button>
      </form>
    </section>
  </aside>

  <!-- Footer with site information -->
  <footer>
    <nav aria-label="Footer navigation">
      <ul>
        <li><a href="/privacy">Privacy Policy</a></li>
        <li><a href="/terms">Terms of Service</a></li>
      </ul>
    </nav>
    <p>&copy; 2026 Frontend Dev. All rights reserved.</p>
  </footer>
</body>
</html>
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.

Related snips

javascript 
// Get canvas and context
const canvas = document.getElementById('myCanvas');
const ctx = canvas.getContext('2d');

// 1. Basic shapes
// Rectangle (filled)

Canvas API for graphics and animations

canvas javascript graphics
by Alex Chang 1 tab
html 
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Form Validation Example</title>
  <style>

HTML forms with validation and accessibility

html forms validation
by Alex Chang 1 tab
javascript 
import { Application } from "@hotwired/stimulus"
import FormSubmitController from "./controllers/form_submit_controller"

const application = Application.start()
application.debug = false

Disable submit button while Turbo form is submitting

rails hotwire stimulus
by codesnips 3 tabs
erb 
<div class="layout">
  <ul class="product-list">
    <% @products.each do |product| %>
      <li class="product-row">
        <%= link_to product.name,
              product_path(product),

Turbo Frames: “details” panel that lazy-loads on click

rails turbo hotwire
by codesnips 4 tabs
ruby 
module LayoutlessTurboFrame
  extend ActiveSupport::Concern

  included do
    layout :layout_for_turbo
  end

Render without layout for Turbo Frame requests

rails hotwire turbo
by codesnips 4 tabs
typescript 
import { useEffect } from 'react'

interface KeyboardHandlers {
  [key: string]: () => void
}

Keyboard navigation and focus management

react accessibility keyboard
by Maya Patel 2 tabs

Share this code

Here's the card — post it anywhere.

Semantic HTML5 elements and accessibility best practices — share card
Link copied