https://www.machform.com/forums/ MachForm Community Forums Topic: W3C CSS 2.1 fails , don't understand why en Wed, 06 May 2026 18:11:51 +0000 https://www.machform.com/forums/topic/w3c-css-21-fails-dont-understand-why#post-12112 Sun, 05 Jun 2011 12:35:15 +0000 redrock 12112@https://www.machform.com/forums/ <p>Thank you, Yuniar - by removing from css the snippet</p> <p>#main_body img{behavior:url(css/iepngfix.htc);border:none}</p> <p>it now does validate as 2.1 in w3c. Thank you! </p> https://www.machform.com/forums/topic/w3c-css-21-fails-dont-understand-why#post-12107 Sat, 04 Jun 2011 18:34:25 +0000 yuniar 12107@https://www.machform.com/forums/ <p>Those are workaround to enable transparent image support for IE6. I suppose you can simply remove those lines, since most people won't be using IE6 anymore. </p> https://www.machform.com/forums/topic/w3c-css-21-fails-dont-understand-why#post-12094 Thu, 02 Jun 2011 13:34:52 +0000 redrock 12094@https://www.machform.com/forums/ <p>The following page</p> <p><a href="http://www.redrockdental.org/appointment-request.php" rel="nofollow">http://www.redrockdental.org/appointment-request.php</a></p> <p>fails to CSS 2.1-validate, and the reason given is:</p> <p>#main_body img<br /> Property behavior doesn't exist : url(css/iepngfix.htc) url(css/iepngfix.htc)</p> <p>Now, I understand that "#main_body" is part of MachForm's CSS, but what does "Property behavior doesn't exist" mean? And what are "iepngfix.htc" &#38; iepngfix.htc referring to?</p> <p>Thanks! </p>