Comments before semi-colon throw exceptions

[omarqureshi]

#asset-help {
 background: #edf0f5 /*url(/images/education/css/share_bg.jpg)*/;
 padding: 0 6px 6px;
 margin-bottom: 24px;
}

for example - the background line throws an error, as a temporary solution have moved the comment after the semi-colon, however it is valid.