It is used to make an element look like a User Interface Element.It has the Following values:
Normal,Window,icon,button,menu,field
Ex:
<html>
<head>
<style type="text/css">
div
{
appearance:button;
-webkit-appearance:button; /* For Safari and Chrome */
-moz-appearance:button; /* For Firefox */
}
</style>
</head>
<body>
<div>C-SharpCorner</div>
</body>
</html>
Note: It shows the div like a Button