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Table of Contents

1. Use and correctly

2. Use

3. Use

and

4. Use

and

to divide content blocks

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How to use semantic HTML5 elements for page structure?

James Robert Taylor

Jul 12, 2025 am 01:20 AM

html5 Semantic

Semantic HTML5 elements can improve accessibility and SEO effects. The specific key points are as follows: 1.

and <footer> can be used inside pages and modules, such as the page level contains logos and navigation bars, and the title and author information are placed at the article level; 2. <nav> wrap the main navigation area, use <ul> to organize link items to avoid the inclusion of secondary links; 3. <main> wrap the unique main content, <aside> put auxiliary information, and distinguish the primary and secondary structures; 4. <section> is used for the theme block, <article> is used for independent content blocks, and it can be judged based on whether the content can be reused.

The use of semantic HTML5 elements is actually not just to make the code look more "professional", it can help browsers, search engines and auxiliary devices better understand page structure. If used correctly, it can improve accessibility and SEO effects.

1. Use <header></header> and <footer></footer> correctly

These two tags are not only available at the top and bottom of the page, they can also appear in articles or modules. For example:

<footer> Similarly, it can be used as a whole page or nested in <article> or <section> .

2. Use <nav> to wrap the main navigation area

Not all links are suitable for placement in <nav> . This tag is more suitable for the main menu structures such as global navigation and sidebar navigation.

In this way, the screen reader will recognize it as a navigation area, which will facilitate users to jump quickly.

3. Use <main> and <aside> to distinguish between primary and secondary content

The main content of the entire page should be wrapped in the <main> tag, and a page generally has only one <main> . It is used in conjunction with <aside> to let the browser know which is the main content and which is auxiliary information (such as sidebar advertisements, related recommendations).

<main> <article> <h2>Article Title</h2> <p>Body content...</p> </article> </main> <aside> <h3>Recommended reading</h3> <ul> <li><a href="#">Other Articles1</a></li> </ul> </aside>

4. Use <section> and <article> to divide content blocks

If you are not sure which one to use, you can ask yourself: Can this paragraph be taken out separately and reused? If you can, it might be <article> .

Basically that's it. The use of semantic tags is not complicated, but they are easily overlooked. Rational use of <header></header> , <footer></footer> , <nav> , <main> , <aside> , <section> and <article> can make the page structure clear and easy to maintain, and can also improve barrier-free experience and SEO performance.

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