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HTML5 Semantics

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HTML tags are classified in two types. 

  • Semantic
  • Non-Semantic

Semantic Elements: Semantic elements have meaningful names which tell about the type of content. For example header, footer, table, … etc. HTML5 introduces many semantic elements as mentioned below which make the code easier to write and understand for the developer as well as instruct the browser on how to treat them. 

  • article
  • aside
  • details
  • figcaption
  • figure
  • footer
  • header
  • main
  • mark
  • nav
  • section

Article: It contains independent content which doesn’t require any other context.

Example: Blog Post, Newspaper Article, etc.

html




<!DOCTYPE html>
<html>
 
<head>
    <title>Article Tag</title>
    <style>
        h1 {
        Color:#006400;
        font-size:50px;
        Text-align:left;
        }
        p {
        font-size:25px;
        text-align:left;
        margin-top:-40px;
        }
    </style>
</head>
 
<body>
    <article>
        <h1>GeeksforGeeks</h1>
        <p>A Computer Science Portal for Geeks</p>
    </article>
</body>
 
</html>


Output: 
 

Article tag

Aside: It is used to place content in a sidebar i.e. aside from the existing content. It is related to surrounding content.

html




<!DOCTYPE html>
<html>
 
<head>
    <title>Aside Tag</title>
    <style>
        h4 {
        Color:#006400;
        font-size:50px;
        Text-align:none;
        margin-bottom:0px;
        }
        p {
        font-size:25px;
        text-align:none;
        margin-top:0px;
        }
    </style>
</head>
 
<body>
 
    <p>GeeksforGeeks is a Computer Science Portal</p>
 
    <aside>
        <h4>GeeksForGeeks</h4>
 
        <p>GeeksforGeeks is a computer Science platform
            where you can learn good programming.
        </p>
    </aside>
</body>
 
</html>


Output:

aside tag

Details and Summary: “details” defines additional details that the user can hide or view. “summary” defines a visible heading for a “details” element.

html




<!DOCTYPE html>
<html>
 
<head>
    <title>Detail and summary Tag</title>
    <style>
        .GFG {
        Color:#006400;
        font-size:50px;
        Text-align:none;
        margin-bottom:0px;
        }
        p {
        font-size:25px;
        text-align:none;
        margin-top:0px;
        }
    </style>
</head>
 
<body>
    <details>
        <summary class="GFG">
            GeeksforGeeks
        </summary>
 
        <p>GeeksforGeeks is a Computer Science portal
            where you can learn good programming.
        </p>
 
    </details>
</body>
 
</html>


Output:a

summary

Figure and Figcaption: These are used to add an image to a web page with a small description.

html




<!DOCTYPE html>
<html>
 
<head>
    <title>Figcaption Tag</title>
    <style>
        h2 {
        Color:#006400;
        font-size:50px;
        Text-align:none;
        margin-bottom:0px;
        }
        p {
        font-size:25px;
        text-align:none;
        margin-top:0px;
        }
    </style>
</head>
 
<body>
    <h2>GeeksforGeeks</h2>
    <figure>
        <img src="4.jpg"
             alt="gfg"
             style="width:20%">
        <figcaption>
          GeeksforGeeks Logo
          </figcaption>
    </figure>
</body>
 
</html>


Output:

figcaption

Header: As the name suggests, it is for the header of a section introductory of a page. There can be multiple headers on a page.  

html




<!DOCTYPE html>
<html>
 
<head>
    <title>Header Tag</title>
    <style>
        h1, h3 {
        Color:#006400;
        Text-align:left;
        margin-bottom:0px;
        }
        p {
        font-size:25px;
        text-align:left;
        margin-top:0px;
        }
    </style>
</head>
 
<body>
    <article>
        <header>
            <h1>GeeksforGeeks</h1>
            <h3>GeeksforGeeks</h3>
            <p>A computer Science portal</p>
        </header>
    </article>
</body>
 
</html>


Output:

header tag

Footer: Footer located at the bottom of any article or document, they can contain contact details, copyright information etc. There can be multiple footers on a page. 

html




<!DOCTYPE html>
<html>
 
<head>
    <title>footer Tag</title>
    <style>
        p {
        font-size:25px;
        text-align:left;
        margin-top:0px;
        }
    </style>
</head>
 
<body>
    <footer>
        <p>
            Posted by: GeeksforGeeks
        </p>
 
        <p>
            Contact:
            <a href=
                geeksforgeeks.org
            </a>.
        </p>
    </footer>
</body>
 
</html>


Output:the

footer tag

Main: It defines the main content of the document. The content inside the main tag should be unique. 

html




<!DOCTYPE html>
<html>
 
<head>
    <title>main Tag</title>
    <style>
        h1 {
        color:#006400;
        }
        p {
        font-size:25px;
        text-align:none;
        margin-top:0px;
        }
    </style>
</head>
 
<body>
    <main>
        <h1>Important Residences</h1>
        <p>
            A few of them are
            Rashtrapati Bhavan,
            White House etc
        </p>
 
        <article>
            <h1>Rashtrapati Bhavan</h1>
 
            <p>
                It is the home of
                the President of India.
            </p>
        </article>
         
        <article>
            <h1>The White House</h1>
 
            <p>
                It is the home of the
                President of United
                States of America.
            </p>
        </article>
    </main>
</body>
 
</html>


Output:,

main tag

Section: A page can be split into sections like Introduction, Contact Information, Details, etc and each of these sections can be in a different section tag.

html




<!DOCTYPE html>
<html>
 
<head>
    <title>section Tag</title>
    <style>
        h1 {
        color:#006400;
        }
        p {
        font-size:25px;
        text-align:none;
        margin-top:0px;
        }
    </style>
</head>
 
<body>
    <section>
        <h1>Data Structure</h1>
 
        <p>
            Data Structure is a data
            organization and storage
            format that enables efficient
            access and modification.
        </p>
    </section>
 
    <section>
        <h1>Algorithm</h1>
 
        <p>
            A process or set of rules to
            be followed in calculations
            or other problem-solving
            operations, especially by
            a computer.
        </p>
    </section>
</body>
 
</html>


Output:a

section tag

nav: It is used to define a set of navigation links in the form of a navigation bar or nav menu. 

html




<!DOCTYPE html>
<html>
 
<head>
    <title>nav Tag</title>
    <style>
        h1 {
        color:#006400;
        }
    </style>
</head>
 
<body>
    <h1>Navigation Bar</h1>
    <nav>
        <a href="/home/">
            Home
        </a> |
        <a href="/about-us/">
            About Us
        </a> |
        <a href="/data-structure/">
            Data Structure
        </a> |
        <a href="/operating-system/">
            Operating System
        </a>
    </nav>
</body>
 
</html>


Output: 

nav tag

Mark: It is used to highlight the text.

html




<!DOCTYPE html>
<html>
 
<head>
    <title>mark Tag</title>
    <style>
        h1 {
        color:#006400;
        }
    </style>
</head>
 
<body>
    <h1>mark tag</h1>
    <p>
        GeeksforGeeks is a
        <mark>Computer Science</mark>
        portal
    </p>
</body>
 
</html>


Output:

mark tag

Non-Semantic Elements: Tags like div, and span fall under the Non-Semantic categories as their names don’t tell anything about what kind of content is present inside them.

div It is a block-level element or division of a section. It is used as a container.

html




<!DOCTYPE html>
<html>
 
<head>
    <title>div Tag</title>
    <style>
        .GFG {
        color:#006400;
        }
    </style>
</head>
 
<body>
    <h1>div Tag</h1>
    <div class="GFG">
        <h1>GeeksforGeeks</h1>
        <p>GeeksforGeeks is a Computer Science portal</p>
    </div>
</body>
 
</html>


Output:that

div tag

span: It is an inline element that doesn’t start on a new line and takes up only the necessary width. For more details use https://www.geeksforgeeks.org/span-tag-html/.

Supported Browsers:  

  • Google Chrome
  • Mozilla
  • Opera
  • Safari

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Last Updated : 20 Jul, 2023
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