Here is a quick fix for old websites which have compatibility issues with Internet Explorer version 8.
But as a good practice, I recommend you to fix the issues so that it will be compatible with Internet Explorer 8 also. Because IE8 is an industry compliant browser which uses maximum of CSS 3.0.
Add this tag in your web pages:
<meta content="”IE=EmulateIE7?" http-equiv="”X-UA-Compatible”" />
If you wish more technical details, click here.