For IE 8 media queries support, use respond.js
It supports only min-width and max-width. The script tag should come after the link element
https://github.com/scottjehl/Respond

Internet Explorer testing VMs: http://www.modern.ie/en-us/virtualization-tools#downloads

In Internet Explorer 8, CSS adjacent sibling selectors don't work with javascript. Example, dynamically added classes in CSS selectors will be ignored by IE8.