html5-respond.js not rendering CSS3 properties in IE7 and IE8 I am working on a drupal 7 website. I am using the zen theme as starter theme. But the html5-respond.js not functioning properly.

I have added border radius property for the boxes, but its not rendering in IE7,IE8. But the js is there and its calling properly.

Please advise me.

!DOCTYPE html&gt;
&lt;!--[if IEMobile 7]&gt;&lt;html class="iem7"  lang="en" dir="ltr"&gt;&lt;![endif]--&gt;
&lt;!--[if lte IE 6]&gt;&lt;html class="lt-ie9 lt-ie8 lt-ie7"  lang="en" dir="ltr"&gt;&lt;![endif]--&gt;
&lt;!--[if (IE 7)&amp;(!IEMobile)]&gt;&lt;html class="lt-ie9 lt-ie8"  lang="en" dir="ltr"&gt;&lt;![endif]--&gt;
&lt;!--[if IE 8]&gt;&lt;html class="lt-ie9"  lang="en" dir="ltr"&gt;&lt;![endif]--&gt;
&lt;!--[if (gte IE 9)|(gt IEMobile 7)]&gt;&lt;!--&gt;&lt;html  lang="en" dir="ltr"
  xmlns:content="http://purl.org/rss/1.0/modules/content/"
  xmlns:dc="http://purl.org/dc/terms/"
  xmlns:foaf="http://xmlns.com/foaf/0.1/"
  xmlns:og="http://ogp.me/ns#"
  xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
  xmlns:sioc="http://rdfs.org/sioc/ns#"
  xmlns:sioct="http://rdfs.org/sioc/types#"
  xmlns:skos="http://www.w3.org/2004/02/skos/core#"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema#"&gt;&lt;!--&lt;![endif]--&gt;

&lt;head profile="http://www.w3.org/1999/xhtml/vocab"&gt;
  &lt;meta charset="utf-8" /&gt;
&lt;meta about="/files/clients/etihad/en/index" property="sioc:num_replies" content="0" datatype="xsd:integer" /&gt;

............

&lt;!--[if lt IE 9]&gt;
    &lt;script src="html5-respond.js"&gt;&lt;/script&gt;
    &lt;![endif]--&gt;
IE8 doesn't work on @import'ed stylesheets. but you can write query by this way

@ Media screen and (min-width: 980px)
{

  / * CSS Document * /

}


and also you must include css3-mediaqueries js 

&lt;! - Css3-mediaqueries.js for IE less than 9 -&gt;
 &lt;! - [If lt IE 9]&gt;
 &lt;script src="http://css3-mediaqueries-js.googlecode.com/svn/trunk/css3-mediaqueries.js"&gt; &lt;/ script&gt;
 &lt;! [Endif] -&gt;


see this http://westilian.com/ie7-and-ie8-support-for-css3-media-query/