Rules

Inheritance Basically a selector which is nested within another selector will inherit the property values assigned to the outer selector. For example, a font defined for the BODY will also be applied to text in a paragraph.

! important A style can be designated as important by specifying ! important. A style that is designated as important will win out over contradictory styles of otherwise equal weight. A ! important statement like this:

BODY { background: url(man.gif) white;
background-repeat: repeat-x ! important }

The weight sort The weight sort sorts declarations according to their weight. Declarations can have normal weight or important weight. Declarations are made important by the addition of !important (or ! important). For example:

P {font-size: 36pt !important}
P {font-size: 16pt}

36 pt will result because that declaration has greater weight.

The order sort When two rules have the same weight, the last rule specified wins. Thus:

P {color: red}
P {color: green}

It would result in green.

Case sensitivity All CSS is case insensitive.