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important declarations in user style sheets
To give importance to a declaration, append !important (p. 124) to it. The use of
!important in author style sheets isn??™t recommended, however, because it can make
maintenance difficult.
The Cascade, Specificity, and
Inheritance
The Ultimate CSS Reference 138
Specificity (p. 126) is calculated by counting the components of the declarations??™
selectors. Inline styles have the highest degree of specificity; element type selectors
have the lowest.
If a property isn??™t set via the CSS cascade, it may be inherited (p. 133) automatically
from a parent element. Not all properties are inherited in this way.
The property value inherit can be used to increase the weight of the inherited
property in the cascade; however, lack of support from Internet Explorer limits its
usefulness.
Chapter 6
CSS Layout and Formatting
While CSS1 didn??™t have much to offer for the graphical layout of documents, CSS2
has introduced several new properties for layout, and CSS3 will probably add even
more.


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