出现在其他元素后面的 Bootstrap 下拉菜单 - IE7 [英] Bootstrap dropdowns menus appearing behind other elements - IE7
问题描述
我使用的是 Bootstrap 2.3.1 问题!
即使您在下拉列表中使用了 z-index
,它也仅与同一堆叠上下文中的元素相关.您需要向父元素添加 z-index
和 position
以使其工作.在这种情况下,我会推荐 header-top
div
I'm using Bootstrap 2.3.1 http://twitter.github.io/bootstrap/index.html
So I'm using their 'dropdown-menu' class to create some simple quick use dropdown menus, but for some reason on IE7 they are appearing behind text and other elements on my site.
Test Link: http://leongaban.com/_projects/defakto/CDS/
I added z-index to my CSS, but still doesn't seem to do anything, please help!
.header .header-nav ul#nav-account ul.dropdown-menu,
.header .header-nav ul#nav-library ul.dropdown-menu {
z-index: 10000;
}
IE9, Chrome, FF and other modern no headache browsers:
IE7 >:(
HTML
<div class="header-nav">
<ul id="nav-account" role="navigation" class="pull-right">
<!-- Language Dropdown Button -->
<li id="language-btn">
<a href="#" id="drop1" class="dropdown-toggle" data-toggle="dropdown">English</a>
<img src="img/header-small-down-arrow.png" alt="grey triangle"/><!-- <span class="grey_triangle"></span>-->
<!-- Language Dropdown Menu-->
<ul class="dropdown-menu" role="menu" aria-labelledby="drop1">
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">English</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">Spanish</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">German</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">Japanese</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">Chinese</a></li>
</ul>
</li>
<!-- User Dropdown Button -->
<li id="account-btn">
<a href="#" id="drop2" class="dropdown-toggle" data-toggle="dropdown">Logout</a>
<img src="img/header-small-down-arrow.png" alt="grey triangle"/>
<!-- <span class="grey_triangle"></span> -->
<!-- User Dropdown Menu-->
<ul class="dropdown-menu" role="menu" aria-labelledby="drop2">
<li role="presentation"><a role="menuitem" tabindex="-1" href="http://google.com">Logout</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="#anotherAction">Account</a></li>
</ul>
</li>
</ul>
Its a stacking context issue!
Even though you are using z-index
on the dropdown, it is only relative to elements in the same stacking context. You need to add a z-index
and a position
to a parent element in order to get this to work. In this case I would recommend the header-top
div
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