As you’ve been discovering all semester, it can be challenging to get your CSS code to do exactly what you want it to! Recently, I was looking over an interesting book, The CSS Detective Guide: Tricks for solving tough CSS mysteries by Denise R. Jacobs. A lot of good ideas here, much along the lines of what we’ve discussed in class, but with much greater detail.

And I learned something new. The book referred me to a page at W3C, validator.w3.org/docs/errors.html. This document explains, with a bit more verbosity than the default, the meaning of the various error messages put out by the HTML validator. Feeling stuck? Check it out!