CSS3 glass effect on any element

.glass {
    position: relative;
}

.glass:after{
    content: " ";
    display: block;
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    border: 1px solid rgba(255, 255, 255, 0.1); border-bottom: 0;
    -webkit-background-origin: border-box;
    -moz-background-origin: border;
    background-origin: border-box;
    background: -webkit-gradient(linear, 0% 0%, 0% 100%, from(rgba(255, 255, 255, .15)), to(rgba(0, 0, 0, .25))), -webkit-gradient(linear, left top, right bottom, color-stop(0, rgba(255, 255, 255, 0)), color-stop(0.5, rgba(255, 255, 255, .15)), color-stop(0.501, rgba(255, 255, 255, 0)), color-stop(1, rgba(255, 255, 255, 0)));
    background: -moz-linear-gradient(top, rgba(255, 255, 255, .15), rgba(0, 0, 0, .25)), -moz-linear-gradient(left top, rgba(255, 255, 255, 0), rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, 0) 50%, rgba(255, 255, 255, 0));
    background: linear-gradient(top, rgba(255, 255, 255, .15), rgba(0, 0, 0, .25)), linear-gradient(left top, rgba(255, 255, 255, 0), rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, 0) 50%, rgba(255, 255, 255, 0));
}