Is a CSS property starting with a hash (#) valid? -
what following css , valid?
h4 { width: 83%; #width: 75%; }
it not valid. #width: 75%; syntax error, since # isn't used in css property names (although used in css selectors, select elements specific ids). browsers ignore (hopefully) , first rule applied.
it might have been someone's attempt write css comment. valid way: /*this comment*/
edit
i suggest using css reset file account browser differences.