10 Reasons Why Your Code Won’t Validate (and How to Fix it)

W3C validation isn't very forgiving at times, but it allows you to see errors that are generated by your markup. Lots of errors and warnings thrown by the validator are a good indicator that your XHTML isn't in very good shape, and might not look consistent across different browsers. Here are 10 sneaky validation problems that trip developers up, and how to avoid them. [Detail]