HTML 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.

New Semantic Elements in HTML5:

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

HTML5 offers new semantic elements to define different parts of a web page:  

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

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HTML5 <section> Element:

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

According to W3C's HTML5 documentation: "A section is a thematic grouping of content, typically with a heading."

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