Transformed elements in Firefox sometimes appear with jagged edges. The anti-aliasing isn’t as smooth as what you find in Webkit-based browsers or Internet Explorer (Figure 1).

transform: rotateX(-45deg);
. View a larger version.The good news is that there’s an easy fix for this. It’s essentially the fix used to address the striped border bug in Opera 12.02. Add border: 1px solid transparent
to the object. The result looks more like what you see in Figure 2.

transform: rotateX(-45deg);
and border: 1px solid transparent