Are there any hard and fast rules for checking CSS is up to standard (maybe W3C standards) before shipping a product off to the customer? The validator offered by W3C is all well and good, but as a tester I am not trained in CSS itself and so don't really know what I'm looking at when errors are returned. How do you know if an error/warning is passable as a risk or if it definitely needs fixing? Is it all down to interpretation of the clients requirements or does someone have a template for the basics to look out for? Any help on this matter would be much appreciated! Regards.
It's a difficult one to answer as it may not be validating not because of a syntax error but because the designer has deliberately used a hack or a CSS3 selector... If you have a particular CSS file you are worried about then why don't you post up the URL here and maybe we can offer some advice