My website has display problems with Internet Explorer

hi, I have a strange issue with IE. My website looks fine with Firefox, Opera, and even Safari, but with IE, the background color for my articles does not appear.If I scroll with the scrollbar, then the background color appears, but not in a pretty way, with bugs... Very strange...My body class looks like:body {
  margin: 0;
  padding: 0;
  font: 75% Verdana, Arial, Helvetica, sans-serif;
  background-color: #005D4C;
}The class for central display (where the articles are):#milieu {
position:relative;
margin-left:260px;
width:683px;
top:23px;
background-color:#C5D97C;
padding-left:10px;
padding-right:15px;
padding-top:10px;
padding-bottom:10px;
text-align:justify;
}And the classes node, sticky and article are defined like this:.node {
  margin: .5em 0 2em 0;
margin-bottom:10px;
}
.sticky {
  background-color: #EEEEEE;
  padding: .5em;
  border: solid 1px #9F9F9F;
}
.article {
  background-color:#E2ECBE;
  padding: .5em;
  border: solid 1px #8AA530;
}Thanks