


How do I use the element to represent the main content of a document?
Jun 19, 2025 pm 11:09 PMThe reason for using the <main> tag is to improve the semantic structure and accessibility of web pages, make it easier for screen readers and search engines to understand page content, and allow users to quickly jump to core content. Here are the key points: 1. Each page should contain only one <main> element; 2. It should not include content that is repeated across pages (such as sidebars or footers); 3. It can be used in conjunction with ARIA attributes to enhance accessibility. <main> is usually located after and before <footer> and is used to wrap unique page content, such as articles, forms, or product details, and should be avoided in <header>, <footer> or <aside>; to improve accessibility, aria-labeledby or aria-label can be used to explicitly identify the <main> part.
The <main></main>
element is used to wrap the primary content of a webpage — the part that's unique to that page and not shared with others (like headers, footers, or navigation). It helps both developers and assistive technologies identify the core content quickly.
Why Use <main></main>
?
Using <main></main>
makes your HTML more semantic. That means screen readers and search engines can better understand your page structure. It also improves accessibility by allowing users to jump straight to the main content.
Some key points:
- There should only be one
<main></main>
element per page. - It shouldn't include content repeated across pages (like sidebars or footers).
- It works well with ARIA attributes for enhanced accessibility.
Where to Place <main></main>
in Your HTML
The <main></main>
tag usually comes after the header and navigation but before the footer. Here's a typical layout:
<header>...</header> <nav>...</nav> <main> <!-- Unique page content --> </main> <footer>...</footer>
This structure helps users and tools find the main content easily without having to scan through repeated parts of the site.
How to Use <main>
Effectively
Here are some practical tips:
- Wrap only the central content inside
<main>
, like articles, forms, or product details. - Avoid placing it inside elements like
<header>
,<footer>
, or<aside>
. - Consider using
aria-labelledby
oraria-label
if you want to name the main section explicitly for screen readers.
A simple example:
<main aria-labelledby="page-title"> <h1 id="page-title">Welcome to Our Blog</h1> <article>...</article> </main>
This helps screen readers announce the main content clearly.
That's basically how to use <main></main>
— straightforward, but important for structure and accessibility.
The above is the detailed content of How do I use the element to represent the main content of a document?. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undress AI Tool
Undress images for free

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

To reduce the size of HTML files, you need to clean up redundant code, compress content, and optimize structure. 1. Delete unused tags, comments and extra blanks to reduce volume; 2. Move inline CSS and JavaScript to external files and merge multiple scripts or style blocks; 3. Simplify label syntax without affecting parsing, such as omitting optional closed tags or using short attributes; 4. After cleaning, enable server-side compression technologies such as Gzip or Brotli to further reduce the transmission volume. These steps can significantly improve page loading performance without sacrificing functionality.

It is a semantic tag used in HTML5 to define the bottom of the page or content block, usually including copyright information, contact information or navigation links; it can be placed at the bottom of the page or nested in, etc. tags as the end of the block; when using it, you should pay attention to avoid repeated abuse and irrelevant content.

HTMLhasevolvedsignificantlysinceitscreationtomeetthegrowingdemandsofwebdevelopersandusers.Initiallyasimplemarkuplanguageforsharingdocuments,ithasundergonemajorupdates,includingHTML2.0,whichintroducedforms;HTML3.x,whichaddedvisualenhancementsandlayout

ThetabindexattributecontrolshowelementsreceivefocusviatheTabkey,withthreemainvalues:tabindex="0"addsanelementtothenaturaltaborder,tabindex="-1"allowsprogrammaticfocusonly,andtabindex="n"(positivenumber)setsacustomtabbing

Adeclarationisaformalstatementthatsomethingistrue,official,orrequired,usedtoclearlydefineorannounceanintent,fact,orrule.Itplaysakeyroleinprogrammingbydefiningvariablesandfunctions,inlegalcontextsbyreportingfactsunderoath,andindailylifebymakingintenti

The standard way to add titles to images in HTML is to use and elements. 1. The basic usage is to wrap the image in the tag and add a title inside it, for example: this is the title of the image; 2. The reasons for using these two tags include clear semantics, convenient style control, and strong accessibility, which helps the browser, crawler and screen readers to understand the content structure; 3. Notes include that it can be placed up and down but needs to maintain logical order, cannot replace the alt attribute, and can contain multiple media elements to form a whole unit.

loading="lazy" is an HTML attribute for and which enables the browser's native lazy loading function to improve page performance. 1. It delays loading non-first-screen resources, reduces initial loading time, saves bandwidth and server requests; 2. It is suitable for large amounts of pictures or embedded content in long pages; 3. It is not suitable for first-screen images, small icons, or lazy loading using JavaScript; 4. It is necessary to cooperate with optimization measures such as setting sizes and compressing files to avoid layout offsets and ensure compatibility. When using it, you should test the scrolling experience and weigh the user experience.

The key to using elements to represent navigation link areas is semantics and clear structure, usually in conjunction with organizational links. 1. The basic structure is to put the parallel links in and wrap them inside, which is friendly to auxiliary tools and is conducive to style control and SEO; 2. Commonly used in or, for placing main navigation or footer link collections; 3. A page can contain multiple areas, such as main menu, sidebar or footer independent navigation.
