HTML and CSS Reference
In-Depth Information
<h1> through <h6> (Headings)
These logical block 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)
class="class name(s)"
dir="ltr | rtl"
id="unique alphanumeric identifier"
lang="language code"
style="style information"
title="advisory text">
</h1>
Attributes Introduced by HTML5
accesskey="spaced list of accelerator key(s)"
data-X="user-defined data"
contenteditable="true | false | inherit"
contextmenu="id of menu"
draggable="true | false | auto"
hidden="hidden"
itemid="microdata id in URL format"
itemprop="microdata value"
itemref="space-separated list of IDs that may contain microdata"
itemscope="itemscope"
itemtype="microdata type in URL format"
spellcheck="true | false"
tabindex="number"
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)
HTML 4 Event Attributes
onclick, ondblclick, onkeydown, onkeypress, onkeyup, onmousedown,
onmousemove, onmouseout, onmouseover, onmouseup
HTML5 Event Attributes
onabort, onblur, oncanplay, oncanplaythrough, onchange, onclick,
oncontextmenu, ondblclick, ondrag, ondragend, ondragenter, ondragleave,
ondragover, ondragstart, ondrop, ondurationchange, onemptied, onended,
