Browser Selector

Well, if you need to have different CSS for different brewers just need to call the below attachment in your head as a JS file:
Browser Selector JS File for Download: css_browser_selector  or you may include the link as it won’t get deleted.

And supposing you are writing a different CSS for Opera, write for that specific part as below:

.opera div { your style }

With the help of that JS the CSS for different browsers will be set.