定位下拉菜单的问题
Problems with positioning a dropdown menu
我想出了一个我从来没有遇到过的问题,那就是z-index。有趣的是,我无法让 E10 Info 的下拉菜单重叠在 "container" 和 "content" div 上。我尝试了高 z-indices 但没有成功。谁能帮我解决我做错了什么?
该网站的URL是http://forum.economy10.com/
还有我的一些代码:
<head>
<style>
.dropdown {
position: relative;
display: inline-block;
}
.dropdown-content {
display: none;
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
padding: 12px 16px;
z-index: 2000000;
min-height:400px;
height:400px;
}
.dropdown:hover .dropdown-content {
display: block;
}
.dropdownd {
position: relative;
display: inline-block;
}
.dropdown-contentd {
display: none;
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
padding: 12px 16px;
z-index: 1;
}
.dropdownd:hover .dropdown-contentd {
display: block;
}
</style>
</head>
<div class="header">
<div class="longo"></div>
<a name="top" id="top"></a>
<div class="wrapper">
<div class="logo">
<a href="{$mybb->settings['bburl']}/index.php"><i class="fa fa-bolt" style="color: #fcb941;"></i> {$mybb->settings['homename']}</a>
</div>
<!-- If you want to use Image based logo, uncomment this <div class="logo">
<a href="{$mybb->settings['bburl']}/index.php"><img src="{$theme['logo']}" title="{$mybb->settings['homename']}" alt="{$mybb->settings['homename']}"></a></div>
-->
<ul id="menu">
<li><a href="https://economy10.com/"> Home </a></li>
<li><a href="http://forum.economy10.com/"> Forums </a></li>
<li>
<div class="dropdown">
<a href="#" class="e10i"> E10 Info </a>
<div class="dropdown-content">
<ul>
<li><a href="https://economy10.com/details/"> E10 Overview </a></li>
<li><a href="https://economy10.com/list-of-suppliers/"> List of Suppliers </a></li>
</ul>
</div>
</div>
</li>
如果您希望下拉菜单透明,则在下拉内容 div 上使用背景颜色 属性 而不是 z-index,只需提供 alpha(rgba 或 hsla 中的 a)值0 在下拉列表 div 上,这将使下拉列表透明。例如:-
.dropdown-content { 背景颜色:rgba(90,90,90,0);}
它没有被掩盖,而是被截断了,因为您在页眉上设置了隐藏溢出。只需删除它,您就可以看到您的下拉菜单。
.header {
position: fixed;
top: 0;
left: 0;
width: 100%;
background: #FFFFFF;
color: #DDD;
z-index: 10000;
height: 100px;
//remove the following line
overflow: hidden;
-webkit-transition: height 0.3s;
-moz-transition: height 0.3s;
transition: height 0.3s;
text-align: center;
line-height: 0px;
}
我想出了一个我从来没有遇到过的问题,那就是z-index。有趣的是,我无法让 E10 Info 的下拉菜单重叠在 "container" 和 "content" div 上。我尝试了高 z-indices 但没有成功。谁能帮我解决我做错了什么? 该网站的URL是http://forum.economy10.com/ 还有我的一些代码:
<head>
<style>
.dropdown {
position: relative;
display: inline-block;
}
.dropdown-content {
display: none;
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
padding: 12px 16px;
z-index: 2000000;
min-height:400px;
height:400px;
}
.dropdown:hover .dropdown-content {
display: block;
}
.dropdownd {
position: relative;
display: inline-block;
}
.dropdown-contentd {
display: none;
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
padding: 12px 16px;
z-index: 1;
}
.dropdownd:hover .dropdown-contentd {
display: block;
}
</style>
</head>
<div class="header">
<div class="longo"></div>
<a name="top" id="top"></a>
<div class="wrapper">
<div class="logo">
<a href="{$mybb->settings['bburl']}/index.php"><i class="fa fa-bolt" style="color: #fcb941;"></i> {$mybb->settings['homename']}</a>
</div>
<!-- If you want to use Image based logo, uncomment this <div class="logo">
<a href="{$mybb->settings['bburl']}/index.php"><img src="{$theme['logo']}" title="{$mybb->settings['homename']}" alt="{$mybb->settings['homename']}"></a></div>
-->
<ul id="menu">
<li><a href="https://economy10.com/"> Home </a></li>
<li><a href="http://forum.economy10.com/"> Forums </a></li>
<li>
<div class="dropdown">
<a href="#" class="e10i"> E10 Info </a>
<div class="dropdown-content">
<ul>
<li><a href="https://economy10.com/details/"> E10 Overview </a></li>
<li><a href="https://economy10.com/list-of-suppliers/"> List of Suppliers </a></li>
</ul>
</div>
</div>
</li>
如果您希望下拉菜单透明,则在下拉内容 div 上使用背景颜色 属性 而不是 z-index,只需提供 alpha(rgba 或 hsla 中的 a)值0 在下拉列表 div 上,这将使下拉列表透明。例如:- .dropdown-content { 背景颜色:rgba(90,90,90,0);}
它没有被掩盖,而是被截断了,因为您在页眉上设置了隐藏溢出。只需删除它,您就可以看到您的下拉菜单。
.header {
position: fixed;
top: 0;
left: 0;
width: 100%;
background: #FFFFFF;
color: #DDD;
z-index: 10000;
height: 100px;
//remove the following line
overflow: hidden;
-webkit-transition: height 0.3s;
-moz-transition: height 0.3s;
transition: height 0.3s;
text-align: center;
line-height: 0px;
}