Semantic Elements


Semantic Elements

What are Semantic Elements?

A semantic element clearly describes its meaning to both the browser and the developer.

Examples of non-semantic elements: <div> and <span> - Tells nothing about its content.

Examples of semantic elements: <form><table>, and <article> - Clearly defines its content.


Semantic Elements in HTML

Many web sites contain HTML code like: <div id="nav"> <div class="header"> <div id="footer"> to indicate navigation, header, and footer.

In HTML there are some semantic elements that can be used to define different parts of a web page:  

  • <article>
  • <aside>
  • <details>
  • <figcaption>
  • <figure>
  • <footer>
  • <header>
  • <main>
  • <mark>
  • <nav>
  • <section>
  • <summary>
  • <time>

HTML Semantic Elements

 

HTML <section> Element

The <section> element defines a section in a document.

According to W3C's HTML documentation: "A section is a thematic grouping of content, typically with a heading."

Examples of where a <section> element can be used:

  • Chapters
  • Introduction
  • News items
  • Contact information

A web page could normally be split into sections for introduction, content, and contact information.







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Semantic Elements in HTML

Below is a list of some of the semantic elements in HTML.

Tag Description
<article> Defines independent, self-contained content
<aside> Defines content aside from the page content
<details> Defines additional details that the user can view or hide
<figcaption> Defines a caption for a <figure> element
<figure> Specifies self-contained content, like illustrations, diagrams, photos, code listings, etc.
<footer> Defines a footer for a document or section
<header> Specifies a header for a document or section
<main> Specifies the main content of a document
<mark> Defines marked/highlighted text
<nav> Defines navigation links
<section> Defines a section in a document
<summary> Defines a visible heading for a <details> element
<time> Defines a date/time

article Element


article Element

The <article> element specifies independent, self-contained content.

An article should make sense on its own, and it should be possible to distribute it independently from the rest of the web site.

Examples of where the <article> element can be used:

  • Forum posts
  • Blog posts
  • User comments
  • Product cards
  • Newspaper articles






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article Element with CSS


article Element with CSS







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Nesting article in section or Vice Versa?


Nesting article in section or Vice Versa?

The <article> element specifies independent, self-contained content.

The <section> element defines section in a document.

Can we use the definitions to decide how to nest those elements? No, we cannot!

So, you will find HTML pages with <section> elements containing <article> elements, and <article> elements containing <section> elements.


HTML <header> Element

The <header> element represents a container for introductory content or a set of navigational links.

<header> element typically contains:

  • one or more heading elements (<h1> - <h6>)
  • logo or icon
  • authorship information

Note: You can have several <header> elements in one HTML document. However, <header> cannot be placed within a <footer><address> or another <header> element.







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footer Element


footer Element

The <footer> element defines a footer for a document or section.

<footer> element typically contains:

  • authorship information
  • copyright information
  • contact information
  • sitemap
  • back to top links
  • related documents

You can have several <footer> elements in one document.

Example







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nav Element


nav Element

The <nav> element defines a set of navigation links.







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aside Element


aside Element

The <aside> element defines some content aside from the content it is placed in (like a sidebar).

The <aside> content should be indirectly related to the surrounding content.







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Use CSS to style the aside element:


Use CSS to style the aside element:







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figure and figcaption Elements


figure and figcaption Elements

The <figure> tag specifies self-contained content, like illustrations, diagrams, photos, code listings, etc.

The <figcaption> tag defines a caption for a <figure> element. The <figcaption> element can be placed as the first or as the last child of a <figure> element.

The <img> element defines the actual image/illustration.







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