Kinds of Style:
The two most common kinds of style are:
Redefined tags and style class
Type 1: 
  Redefining tags: You 
  can redefine html tags to include new properties in addition to it's common 
  properties such as making all <h2> tags or headin, size 2, tags red and 
  Arial.
  
ex.
  h2{color:red font-family:Arial}
There are two parts to this style: the selector area or current tag and the style redefinition are separated by curly brackets.
h2{color:red 
  font-family:Arial}
  selector {style definition}
Type 2: Class
With classes you name your own style and then refer to that name in your html file to apply the style.
This looks like:
ex.
  .mystyle
notice the "." it always preceeds a class element.