Iis configuration

Hello All,
I have an in house server running 2008 server, I’ve added IIS 7 and all seems to be running well for everything except CSS animations. It’s a weird anomaly, I can host and run animations perfectly from my server with the FireFox browser, Chrome runs but no easing/transition, Explorer 11 just sits there and does nothing.
I loaded my HTML files to another host site and all ran perfect in all browsers mentioned with no code changes, including Explorer 11. Sounds like an IIS 7 issue, anyone have any suggestions how to get this host to host CSS animation?
John