cssinternet-explorerinternet-explorer-8rounded-corners

CSS rounded corners in IE8

I'm having issues with rounded corners in IE8. I've tried a few methods without success.

Here is my code: 

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Untitled Page</title>

<style>
body {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.8em;
  padding: 2px;
  margin: 2px;
  color: #505050;
  line-height: normal;
}
p {
  margin: 4px;
}
.categoryheading3 {
  -moz-border-radius-topleft: 5px;
  -moz-border-radius-topright: 5px;
  -webkit-border-top-left-radius: 5px;
  -webkit-border-top-right-radius: 5px;
  background-color: #297BB6;
  color: #FFFFFF;
  font-size: 16px;
  font-weight: 700;
  padding: 8px 0;
  text-align: center;
  margin: 0px;
}
.leftcolumn {
  width: 174px;
  padding: 8px;
  float: left;
  display: inline-block;
  background-color: transparent;
  /*--min-height: 500px*/
  overflow: hidden;
}
.lefttop {
  display: inline-block;
  width: inherit;
  margin: 0 5px 2em 0;
  float: left;
  width: 160px;
  background-color: #FFFFFF;
  border: 2px solid #297BB6;
  -moz-border-radius: 10px;
  -webkit-border-radius: 10px;
  border-radius: 10px;
}
</style>


</head>
<body>

<div class="leftcolumn">
  <div class="lefttop">
    <H4 class="categoryheading3">Heading</H4>
    <p>sample text sample text sample text sample text sample text sample text sample text sample text sample text sample text sample text sample text </p>
  </div>
</div>
</body>
</html>

Which produces this in Firefox:

firefox example

But this in IE8:

IE8 makes me sad

If anyone has any tips I'd be very grateful!

edit: Joseph helped by suggesting to use pie.htc, however I'm still struggling with this element not working:

.categoryheading3 {
  -moz-border-radius: 5px 5px 0 0;
  -webkit-border-radius: 5px 5px 0 0;
  behavior: url(PIE.htc);
  background-color: #297BB6;
  color: #FFFFFF;
  font-size: 16px;
  font-weight: 700;
  padding: 8px 0;
  text-align: center;
  margin: 0px;
}
Solution

  • Internet Explorer (under version 9) does not natively support rounded corners.

    There's an amazing script that will magically add it for you: CSS3 PIE.

    I've used it a lot of times, with amazing results.