That's the way it always has been done.
I have found it to be the case that many best practice fallbacks like
this come from the early days of web/app design. Because it was a new
experience for everyone, a lot was dumbed down. I would not jump to
the conclusion that designers are the ones
Check the Screens function, which overlays a transparent frame over
your design. It shows you the available real estate you have with
each browser under Mac and Windows.
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Posted from the new ixda.org
Cameron Moll has a great one that I have stuck to using a 960 grid.
http://cameronmoll.com/archives/2006/12/gridding_the_960/
Also a great Mac utility is Xscope, which shows you what your work
looks like in almost all browsers including iPhone Safari.
http://iconfactory.com/software/xscope/
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