Cross-Browser RGBa
* {
/* Solid color fallback for no-RGBa support */
background: rgb(200, 200, 200);
/* RGBa declaration */
background: rgba(200, 200, 200, 0.5);
}
/* IE8: RGBa value in hex: aaRRGGBB */
* {
background:transparent;
-ms-filter:"progid:DXImageTransform.Microsoft.gradient(startColorstr=#7FC8C8C8,endColorstr=#7FC8C8C8)";
}
/* IE 7 and below: RGBa value in hex: aaRRGGBB */
* {
background:transparent;
zoom: 1;
filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#7FC8C8C8,endColorstr=#7FC8C8C8);
}