Black Glass CSS3

black_glass.css

http://dev.opera.com/articles/view/beautiful-ui-styling-with-css3-text-shadow-box-shadow-and-border-radius/

Here I’ve applied rgba colours to the shadows, so most of this box is semi-transparent. I have added a second div around the first one with a repeating background pattern image applied to it, so you can appreciate the full extent of this effect.

div {
   width: 100px;
   height: 100px;
   margin: 10px;
   padding: 0;
   border: 1px solid rgba(0,0,0,0.5);
   border-radius: 10px 10px 2px 2px;
   background: rgba(0,0,0,0.25);
   box-shadow: 0 2px 6px rgba(0,0,0,0.5), inset 0 1px rgba(255,255,255,0.3), inset 0 10px rgba(255,255,255,0.2), inset 0 10px 20px rgba(255,255,255,0.25), inset 0 -15px 30px rgba(0,0,0,0.3);
   -o-box-shadow: 0 2px 6px rgba(0,0,0,0.5), inset 0 1px rgba(255,255,255,0.3), inset 0 10px rgba(255,255,255,0.2), inset 0 10px 20px rgba(255,255,255,0.25), inset 0 -15px 30px rgba(0,0,0,0.3);
   -webkit-box-shadow: 0 2px 6px rgba(0,0,0,0.5), inset 0 1px rgba(255,255,255,0.3), inset 0 10px rgba(255,255,255,0.2), inset 0 10px 20px rgba(255,255,255,0.25), inset 0 -15px 30px rgba(0,0,0,0.3);
   -moz-box-shadow: 0 2px 6px rgba(0,0,0,0.5), inset 0 1px rgba(255,255,255,0.3), inset 0 10px rgba(255,255,255,0.2), inset 0 10px 20px rgba(255,255,255,0.25), inset 0 -15px 30px rgba(0,0,0,0.3);
}