HTML Aside Tag: How to Create a Side Content

You use the <aside> tag to mark extra content in HTML. It does not replace the main text and shows related material in a clear section. It separates content for better strucure.

Understand the <aside> Tag in HTML

The <aside> tag holds extra content. It relates to the main text but stays apart. It sets this content in its own space.

Readers see it as separate. It does not interrupt the main topic. This helps them focus on the core idea.

The syntax looks like this:

<aside>
  Extra content here
</aside>

Use this format when you write the code. The open tag marks the start, and the close tag marks the end.

You can place text or images inside. This keeps the related details in one spot. Browsers render it as a block element. It sits apart from the main content. This gives structure to the page.

The <aside> tag signals that content relates to but stays outside the main flow. It defines the context but does not combine it with the main message. Readers know the main story, and the extra details have clear borders.

Use <aside> for related side content. Use <section> for main content parts with clear headings. The <aside> holds extra notes or links. The <section> divides the main content into parts.

This difference keeps your page well-structured. Screen readers announce an aside section. This tells users that content has a separate role.

They hear the distinction. They can skip or read it as needed. This helps people use the page more easily.

Styles of <aside> Tag with CSS

You write CSS to shape the <aside> tag.

Here’s the structure you need.

aside {
  background-color: #eeeeee;
  border-left: 4px solid #222222;
  padding: 12px;
  margin: 20px 0;
}

This code sets a light background. It adds a left border. It creates space inside and around the box.

Readers see a clear separation between the main content and the aside content.

Examples of HTML <aside> Tag in Web Layouts

Sidebar with Related Articles:

<aside>
  <h2>Related Articles</h2>
  <ul>
    <li><a href="#">First Topic</a></li>
    <li><a href="#">Second Topic</a></li>
  </ul>
</aside>

This code creates a sidebar. It holds a heading and a list. Users can view related topics and still keep the main text visible.

Author Bio Section:

<aside>
  <h2>About the Author</h2>
  <p>Alex writes code tutorials and explains web concepts in clear terms.</p>
</aside>

This box shows who wrote the content. Readers know the source. It sits apart from the main article.

Promotional Content Box:

<aside>
  <h2>Ad</h2>
  <p>See our partner’s plans for better site performance.</p>
</aside>

This holds a short ad. It separates sponsored content from the main page. Readers know it has a different role.

Extra Tip Box:

<aside>
  <h2>Tip</h2>
  <p>Validate HTML before you publish. Catch errors and keep code clean.</p>
</aside>

This box offers a short tip. It stands apart from the main text. Readers see it as extra advice.

Wrapping Up

In this article, you see what the <aside> tag does. You learn how to write it and where to use it. You see CSS styles and clear code examples.

Here is a quick recap.

• The <aside> tag holds related content outside the main text.
• It gives browsers clear structure.
• It uses a block-level layout.
• Screen readers announce it as separate.
• You can nest it if needed.
• CSS sets its look and spacing.

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