This small site has some very useful pages: Web-Safe Fonts, Font Sizes, Color Charts and HTML Lines.

• Web-Safe Fonts - This list the original Web-Safe Fonts and allows you to try them.
• Font Sizes - This is a conversion chart for the different font size schemes
• Color Charts - This page displays Pantone and CSS colors side by side with their equivalent numbers in various other formats. Very useful for converting.
• HTML Lines - This displays all the differnt types of lines <hr> that you can do