Welcome to CSS 2.1 & 3 selector practice. I'm so glad you're here! CSS 2.1 selectors include:
You will find that things go awry when you're in Quirks mode. I hate quirks mode! If everyone used standards, quirks mode wouldn't be a problem.
Support standards!
If you want, e-mail me at quirks@abcd.com, but not if you don't support standards.
Have a nice day!