Fair enough but CssUserAgent is a far lighter solution than Modernizr. I find that 99.9% of my CSS is the same per browser so I just need a slight tweak here or

Fair enough but CssUserAgent is a far lighter solution than Modernizr. I find that 99.9% of my CSS is the same per browser so I just need a slight tweak here or there which CssUserAgent does without a lot of overhead. Modernizr is about 5x the size and spends time manipulating lots of DOM objects to test features which might not even be used.