3581 2006-08-05 16:53:49 +0000 Says Parse-Tree error for what im sure is a valid code 2006-08-07 00:44:03 +0000 1 1 1 Unclassified CSSValidator Other CSS Validator PC Windows XP RESOLVED INVALID P2 normal --- 1 cyaneyed ot www-validator-cvs oldest_to_newest 11029 0 cyaneyed 2006-08-05 16:53:49 +0000 i use windows xp sevice pack 1. i use the css validator to check whether my code is css compliant. in my stylesheet i use the opacity codes: filter:alpha(opacity=75); -moz-opacity:0.75; opacity:0.75; -khtml-opacity:0.75; padding-top: 10px; when i test it in IE6 and Firefox 1.5.06 it works pretty well. i use it to make my text areas semitransparent so that the background image shows through it. when i check it with cssvalidator it says: <--------------QUOTE--------------> To work as intended, your CSS style sheet needs a correct document parse tree. This means you should use valid HTML. Errors URI : http://www.cyaneyed.frih.net/homestyle.css * Line: 11 Context : body Parse Error - opacity=75) * Line: 12 Context : body Parse Error - -moz-opacity:0.75; * Line: 18 Parse Error - :0.75; -khtml-opacity:0.75; padding-top: 10px; } <------------------END QUOTE----------------------> but if the browsers interpret it correctly then why is the css validator saying that its not valid css. 11031 1 ot 2006-08-07 00:44:03 +0000 (In reply to comment #0) > but if the browsers interpret it correctly > then why is the css validator saying > that its not valid css. Because the validator is not here to check what browsers support but to check whether the stylesheet is following the specification. Now, there is no filter property in the CSS2 specification [1], and -moz-* properties are proprietary. So the validator is right in pointing them to you. http://www.w3.org/TR/CSS2/propidx.html