Hi,
Can you tell me, does your template provide features for css/js compression and combining? If it does, please disable these features, clear your server and browser cache and check if that resolves your issue. If it does you need to exclude this file from these features.
In case it doesn;'t solve your issue, please be more detailed about what exactly is going wrong. Also, check your browser concole and tell us what errors you see in the console.