CSS3 introduce 3 new selectors for the sub-string or matching attributes. they are [att^=val], [att$=val] and [att*=val]. these selectors coming under Sub-string Matching Attribute Selectors section.

[att^=val]

This is the “begins with” selector. This selector allows for the selection of elements where a specified attribute begins with a specified string. example:

<pre>a[alt~=”Kerala”] { color:#00aa00; font-size:14px; border:1px solid #00aa00; padding:3px 10px; font-family:Arial, Helvetica, sans-serif;  text-decoration:none; margin:2px; background:#afa }</pre>

<code>a[alt~=”Karnataka”] { color:#0000aa; font-size:14px; border:1px solid #0000aa; padding:3px 10px; font-family:Arial, Helvetica, sans-serif; text-decoration:none; margin:2px; background:#aaf }</code>