<h1> Through <h6> (Headings)
These tags implement six levels of document headings; <h1> is the most prominent, and <h6> is the least prominent.
Standard Syntax
<h1
align="center | justify | left | right" (transitional only)</h1>
class="class name(s)"
dir="ltr | rtl"
id="unique alphanumeric identifier"
lang="language code"
style="style information"
title="advisory text"
Attributes Defined by Internet Explorer
accesskey="key" (5.5)
contenteditable="false | true | inherit" (5.5)
disabled="false | true" (5.5)
hidefocus="true | false" (5.5)
language="javascript | jscript | vbs | vbscript" (4)
tabindex="number" (5.5)
unselectable="on | off" (5.5)
Standard Events
onclick, ondblclick, onkeydown, onkeypress, onkeyup, onmousedown, onmousemove, onmouseout, onmouseover, onmouseup
Events Defined by Internet Explorer
onactivate, onbeforeactivate, onbeforecopy, onbeforecut, onbeforedeactivate, onbeforeeditfocus, onbeforepaste, onblur, oncontextmenu, oncontrolselect, oncopy, oncut, ondeactivate, ondrag, ondragend, ondragenter, ondragleave, ondragover, ondragstart, ondrop, onfocus, onfocusin, onfocusout, onhelp, onlosecapture, onmouseenter, onmouseleave, onmousewheel, onmove, onmoveend, onmovestart, onpaste, onpropertychange, onreadystatechange, onresize, onresizeend, onresizestart, onselectstart, ontimeerror
Element Specific Attributes
- align
- This attribute controls the horizontal alignment of the heading with respect to the page. The default value is left.
Example
<h1>This is a Major Document Heading</h1>
<h2 align="center">Second heading, aligned to the center</h2>
<h3 align="right">Third heading, aligned to the right</h3>
<h4>Fourth heading</h4>
<h5 style="font-size: 20pt">Fifth heading with style information</h5>
<h6>The smallest heading</h6>
Compatibility
HTML 2, 3.2, 4, 4.01, XHTML 1.0, 1.1, Basic
Internet Explorer 2, 3, 4, 5, 5.5, 6
Netscape 1, 2, 3, 4, 4.5-4.8, 6, 7
Opera 4-7
Notes
In most implementations, heading numbers correspond inversely with the six font sizes supported by the <font> element. For example, <h1> corresponds to <font size="6">. The default font size is 3. However, this approach to layout is not encouraged and page designers should consider using styles to set even relative sizes.
HTML 3.2 supports only the align attribute. HTML 2 does not support any attributes for headings.
The strict definition of HTML 4.01 does not include support for the align attribute. Style sheets should be used instead.
