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In the CSS box model, padding and borders are added to the
element??™s width, whereas in the IE5 box model, padding and borders reduce the
available content area.
CSS boxes can be block-level or inline. The two types are laid out very differently.
Box layout occurs in formatting contexts, relative to a containing block. The display
property controls which type of box is generated for an element.
CSS Layout and Formatting
The Ultimate CSS Reference 186
Boxes are laid out in the normal flow if they??™re static or relatively positioned. Floated
or absolutely positioned boxes are taken out of the normal flow and laid out
according to special rules.
Table rendering is quite complex, and hampered by a lack of browser support. There
are two table layout algorithms (fixed and automatic) and two border models
(separated and collapsing).
Relatively positioned boxes are shifted from their normal position in the flow. Only
the rendered box is shifted??”the element still occupies the original position as far
as the flow is concerned.


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