From http://www.w3schools.com (Copyright Refsnes Data)

HTML <h1> to <h6> tags


Example

The six different HTML headings:

<h1>This is heading 1</h1>
<h2>This is heading 2</h2>
<h3>This is heading 3</h3>
<h4>This is heading 4</h4>
<h5>This is heading 5</h5>
<h6>This is heading 6</h6>

Try it yourself!


Definition and Usage

The <h1> to <h6> tags are used to define HTML headings.

<h1> defines the largest heading and <h6> defines the smallest heading.


Browser Support

Internet Explorer Firefox Opera Google Chrome Safari

The <h1> to <h6> tags are supported in all major browsers.


Differences Between HTML and XHTML

The "align" attribute of the <h1> to <h6> elements was deprecated in HTML 4.01, and is not supported in XHTML 1.0 Strict DTD.


Optional Attributes

DTD indicates in which DTD the attribute is allowed. S=Strict, T=Transitional, and F=Frameset.

Attribute Value Description DTD
align left
center
right
justify
Deprecated. Use styles instead.
Specifies the alignment of the text in the heading.
TF

Standard Attributes

id, class, title, style, dir, lang, xml:lang

For a full description, go to Standard Attributes.

Event Attributes

onclick, ondblclick, onmousedown, onmouseup, onmouseover, onmousemove, onmouseout, onkeypress, onkeydown, onkeyup

For a full description, go to Event Attributes.


From http://www.w3schools.com (Copyright Refsnes Data)