The CSS validator is your friend.
http://jigsaw.w3.org/css-validator/validator?text=a{padding%3A45%3B}&profile=css21&usermedium=all&type=none&warning=1&lang=en
45 what? Hippos? For lengths (other than 0) units are required.
padding: 45mm;
padding: 45%;
padding: 45pt;
padding: 45px;
and so on.
David Dorward
2009-06-12 08:00:34