HTML Heading 3 Element

HTML Heading 3 <h3> tag is used to define heading of type 3 in an HTML document.

Example

A simple Heading 3 element is shown in the following example.

index.html

</>
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<!DOCTYPE html>
<html>
    <body>
        <h3>Hello World</h3>
    </body>
</html>

Note: HTML Heading 3 element starts with the tag <h3> and ends with an end tag </h3>.

Default CSS for HTML <h3>

By default, following CSS properties are set for a Heading 3 element.

</>
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display: block;
font-size: 1.17em;
margin-block-start: 1em;
margin-block-end: 1em;
margin-inline-start: 0px;
margin-inline-end: 0px;
font-weight: bold;

Inline Style for HTML Heading 3 Element

We can change the style of Heading 3 element through inline styling using style attribute.

In the following example, we have set the color as red for the Heading 3 element.

index.html

</>
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<!DOCTYPE html>
<html>
    <body>
        <h3 style="color:red;">Hello World</h3>
    </body>
</html>

Apply CSS for HTML Heading 3 Element

We can apply CSS for all Heading 3 elements using the h3 tag.

index.html

</>
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<!DOCTYPE html>
<html>
    <head>
        <style>
            h3 {
              color:red;
            }
          </style>
    </head>
    <body>
        <h3>Hello World</h3>
    </body>
</html>

Conclusion

In this HTML Tutorial, we learned about HTML <h3> tag and went through different examples that cover defining an HTML Heading 3 element, and styling it.