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Looks like there is unnecessary comment closer, just after px;
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HTML:
#headerMover #headerProxy
{
@property "header.background";
background-color: #394350;
@property "/header.background";
height: {xen:calc '@headerLogoHeight + @headerTabHeight * 2 + 2'}px;*/ /* +2 borders */
}
Looks like there is unnecessary comment closer, just after px;