From time-to-time there will probably be situations where you could use some help or guidance with CSS during your web design and development work. While there are plenty of great CSS sheet available, I would like to point out 1 that can be very helpful resources in these situations.
CSS Cheat Sheet
The CSS Cheat Sheet is a great reference to have on hand in anticipation of those times when a little extra help might be needed. It is a one-page document that includes all selectors and properties.