About validator w3c

Hello everyone,

i’m asking about make your template wordpress validate in html5 / css3 is needed and important or not ?!!

why i’m asking this question because in the requirements to submit a wordpress theme is clearly said that html5 and css3 must be validate under w3c, but when i make a quick try in some template and theme of wordpress in themeforest i found that they aren’t validate in w3c and they have many errors and warnings !!!

what that means guys ?!!! i feel so confused !!

Every product must be valid under w3c … there are some errors that can be accepted like g+ script - because it always generate error. Some demo also can have validate errors because author forget about, for example alt attribute, but final product for customer must be validate.

Thank you Wordica for your reply
ok i understood now thank you