问题
I have set up some divs for my layout, a main div and a menu div.
They look perfect in Firefox, but for some reason, Chrome and Safari get messed up.
For some reason the width of the div gets smaller when overflow:hidden; is added to the CSS. I need overflow:hidden; though, because I have other floats inside the main div. You can see the example here:
http://jsfiddle.net/kR7rs/2/
It shows up fine in Firefox, but in Safari and Chrome, there's a margin on the right side of the div as well.
回答1:
Removing the margin from main seems to fix it:
http://jsfiddle.net/kR7rs/3/
What I think it happening is that when overflow:hidden is set, the entire element wraps around the floats instead of the text within the div. So this gives the result in the fiddle. Then if you set a margin on it also, the width is decreased further by the left padding.
Kind of seems like a bug.
(Don't have FF right now to test it and see if it breaks it for FF.)
回答2:
Move overflow:hidden to #wrapper. That fixes it, but doesn't explain why.
来源：https://stackoverflow.com/questions/6988451/overflowhidden-messing-with-margins-in-chrome-and-safari