Reply To: CSS help on ID and Class

[Kingslayer]

Specificity is the word you are looking for ;).

https://css-tricks.com/multiple-class-id-selectors/

Here Chris explains it in an easy way.

Here is some more to follow up =).

http://www.smashingmagazine.com/2007/07/27/css-specificity-things-you-should-know/