In article <
14f2d453-6b7a-4106...@googlegroups.com>,
If your banner is a DIV element and you don't have margins or paddings
on it set to interfere, and if it is a child of BODY and you style the
latter
body {margin: 0; padding: 0;}
then it will stretch from side to side of the viewport without doing
anything more, your 100% style is likely not needed. You don't need to
style the DIV at all in many such situations.
There is a CSS group to which this question is more relevant for:
comp.infosystems.www.authoring.stylesheets
--
dorayme