当指针移动缓慢时，Internet Explorer会保持一个微小的垂直间隙，导致鼠标移出 [英] Internet Explorer keeps a tiny, whiney vertical gap causing mouseout when pointer moves slowly

问题描述

我询问了

您可以使用 auto 来代替：

  .open> .dropdown-menu {
 margin-top：auto; 
 
 
 
 $ b 
这是你的jsfiddle的一个分支：
 
 < a href =https://jsfiddle.net/0a67pyd2/4/ =nofollow noreferrer> https://jsfiddle.net/0a67pyd2/4/   
 
 
检入chrome / firefox / ie。
 
I asked about the vertical gap causing mouseout on slow pointer movement and the issue got resolved (two separate approaches). However, I noticed that the corrected behavior only applies to FF and Cr, while IE still keeps a tiny vertical gap. It got much tinier, which is good, but it's still there.
.open > .dropdown-menu {
  margin-top: initial;
}
See this fiddle and compare the behavior between browsers for details.

How can I make IE behave like the other children in the class?
解决方案
IE doesn't understand the initial value of the margin-top:



You can use auto instead:
.open>.dropdown-menu{
    margin-top: auto;
}
Here is a fork of your jsfiddle:

https://jsfiddle.net/0a67pyd2/4/

Checked in chrome/firefox/ie.

                        
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