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I keep getting this error when checking my CSS:
16 #wrapper Value Error : padding Parse Error 0 5% 70 nav Value Error : margin only 0 can be a length. You must put a unit after your number : 20 0 0 0
Any idea what it means and how to solve it?!
As it says: you need to add units after your numbers. Try adding px after each number, or %, if that is what you are using. If you don't add a unit, the browser does not know how to interpret the values correctly.