The Website is based on an HTML5 responsive grid system with CSS3. It was converted to XHTML in order to use ASP.Net C# controls and a Master page with content regions. The site is 100% standards compliant. The HTML is W3C validated and CSS is W3C CSS validated, and must remain that way.
The page has a version of Modernizr ( http://modernizr.com ) installed which is not working as intended. In IE 10, IE 9, and IE 8, the background image is not visible. In older versions of IE, the background image is visible but the color of the background (which is the correct color) does not match the header PNG (which appears to be darker than it should be).
There is a form with radio buttons that becomes a disorganized mess in all versions of IE.
Everything looks perfect in Firefox, Safari, and Opera. The site has not been tested in Chrome, but needs to be Chrome compatible.
I am open to using any available open source solution. Modrnizr is open source and might work if it is configured properly. That would be a quick fix.
Please apply for this job if you have successfully solved browser cross compatibility issues that validated.