Example: nicolasgallagher.com/lab/css3-facebook-buttons/
To create the default "button" add a class of uibutton to any appropriate element. To create the blue variant include the additional class confirm. To create the green variant include an additional class special.
<a class="uibutton" href="#">Button</a>
<button class="uibutton" type="submit">Button</button>
<input class="uibutton" type="submit" value="Button">
To create larger buttons include an additional class of large
<a class="uibutton large" href="#button">Search</a>
To created grouped buttons wrap them in an element, or use a list, given the class 'uibutton-group'.
<div class="uibutton-group">
<a href="#button" class="uibutton">Dashboard</a>
<a href="#button" class="uibutton">Inbox</a>
<a href="#button" class="uibutton">Account</a>
<a href="#button" class="uibutton">Logout</a>
</div>
<ul class="uibutton-group">
<li><a href="#button" class="uibutton">Dashboard</a></li>
<li><a href="#button" class="uibutton">Inbox</a></li>
<li><a href="#button" class="uibutton">Account</a></li>
<li><a href="#button" class="uibutton">Logout</a></li>
</ul>
To display a toolbar of buttons and grouped buttons, use a wrapping element given the class uibutton-toolbar.
<div class="uibutton-toolbar">
<a href="#button" class="uibutton">Mark as unread</a>
<div class="uibutton-group">
<a href="#button" class="uibutton">Report spam</a>
<a href="#button" class="uibutton">Delete</a>
</div>
<a href="#button" class="uibutton">Unsubscribe</a>
</div>
A range of icons can be added (only for links and buttons) by adding a class of icon and any one of the provided icon classes.
<a href="#" class="button icon add">New message</a>
Full support: Firefox 3.5+, Google Chrome, Safari 4+, IE 9+, Opera 11.10+. Note: Some CSS3 enhancements are not supported in older versions of Opera and IE. The use of icons is not supported in IE 6 or IE 7.
Public domain: http://unlicense.org