- pre { /* make the box translucent (80% opaque) */
- border: solid red;
- opacity: 0.8; /* Firefox, Safari(WebKit), Opera */
- -ms-filter: "alpha(opacity=80)"; /* IE 8 */
- filter: alpha(opacity=80); /* IE 4-7 */
- zoom: 1; /* set "zoom", "width" or "height" to trigger "hasLayout" in IE 7 and lower */
- }
ref:https://developer.mozilla.org/En/CSS:-moz-opacity
