In the following code, I'd like the #nav
div to overlap the #content
div. Even though #nav
has a higher z-Index value, it is still being overlapped by #content
.
FIDDLE: http://jsfiddle.net/Zfcba/
HTML:
<div id="page">
<div id="nav"></div>
<div id="content"></div>
</div>
CSS:
#page
{
margin: 20px 0px;
padding: 10px;
display: block;
width: 70%;
height: 200px;
border: 1px solid gray;
}
#nav
{
float: left;
width: 40px;
height: inherit;
border: 1px solid red;
z-index: 999;
}
#content
{
float: left;
margin-left: -20px;
width: 200px;
height: inherit;
border: 1px solid blue;
background: lightgray;
z-index: 0;
}
Pretty simple code, but I can't understand what I'm doing wrong. Any help would be appreciated.
Note: I tried the same without the outer div ( http://jsfiddle.net/Zfcba/1 ). Still the same problem. :(
将此添加到您的CSS
#above{position:absolute;}
z-index
only works for absolute
positioned elements. As the browser ignores the value for z-index
, it will then render it in the order the elements are in your html-code. As #content
is later in your code than #nav
, #content
will be displayed over #nav
.
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