问题
If you look at this code: http://jsfiddle.net/b3KaM/2/
in IE7 the <a> tags do not stretch to their parent <li> width even if display: block; is set. You can see the difference with the background color set to red on the list items and yellow on the links.
it obviously work fine in FF/Chrome & friends.
EDIT: the complication here is that I cannot set a fixed width - the link text should stay on one line and the whole list should expand as needed.
I'm aware that this as been asked before and I've found a few questions on SO but I could not find a valid solution to this issue - any ideas anyone?
If not - is it safe to say that is not possible to achieve the same result on IE7 as on other browsers, i.e. it's an Internet Explorer bug with no workaround?
回答1:
This problem is caused by a rendering phenomenon in IE7 and lower known as hasLayout.
To fix the problem, you must simply prevent your a elements from "gaining layout".
Unfortunately, there's massive list of stuff that causes an element to "gain layout".
Your a elements currently have overflow: hidden and min-height set. If you remove those properties, it will work in IE7.
回答2:
With block you have to give the width also for the element.For example:- http://jsfiddle.net/b3KaM/8/
来源：https://stackoverflow.com/questions/11224947/ie7-display-block-a-within-li-does-not-display-correctly