我知道使用子菜单标签的绝对位置；但是，当我这样做时，问题就解决了，但只显示子菜单的最后一个条目。其他人似乎都被吞没了。请帮忙!我的代码如下所示:
* {
margin: 0;
padding: 0;
}
body {
background-color: #575768;
}
#topBar {
background-color: #C9A26B;
width: 100%;
height: 70px;
color: white;
font-family: arial, helvetica, sans-serif;
}
.fixedwidth {
width: 1500px;
margin: 0 auto;
}
#logodiv {
padding-top: 5px;
float: left;
border-right: #FFFFFF 1px solid;
padding-right: 30px;
}
#signindiv {
font-weight: bold;
float: left;
font-size: 1em;
width: 90px;
border-right: #FFFFFF 1px solid;
padding: 25px 0 27px 20px;
}
#topmenudiv {
padding-top: 20px;
}
/* Rules for Nav Menu ___________________________________ */
#mainmenu,
.submenu {
list-style-type: none;
}
#mainmenu li {
width: 185px;
text-align: center;
position: relative;
float: left;
margin-right: 4px;
}
#mainmenu ul li {} #mainmenu a {
text-decoration: none;
display: block;
width: 185px;
height: 40px;
background-color: #5E5D5B;
border: 1px solid #CCC;
border-radius: 5px;
color: #EE9A24;
}
#mainmenu .submenu a {
margin-top: 2px;
}
#mainmenu li:hover > a {
background-color: #CFC;
}
#mainmenu li:hover a:hover {
background-color: #FFD8A4;
}
#mainmenu .submenu {
display: none;
}
#mainmenu li:hover .submenu {
display: block;
}
#meat {
clear: both;
padding-top: 20px;
}
footer {
text-align: center;
margin: 0 auto;
}<!doctype html>
<html>
<head>
<title>ST-LLC About Us</title>
<meta charset="utf-8" />
<meta http-equiv="Content-type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
</head>
<body>
<div id="container">
<div id="topBar">
<div class="fixedwidth">
<div id="logodiv">
<img src="images/LLClogo.jpg" width="170px" />
</div>
<div id="signindiv">Sign In
</div>
<div id="topmenudiv">
<ul id="mainmenu">
<li><a href="#">About Us </a>
</li>
<li><a href="#"> Services </a>
<ul class="submenu">
<li><a href="#"> Project Management</a>
</li>
<li><a href="#"> Digital Content</a>
</li>
</ul>
</li>
<li><a href="#"> Projects </a>
<ul class="submenu">
<li><a href="#">Active Projects</a>
</li>
<li><a href="#">Closed Projects</a>
</li>
</ul>
</li>
<li><a href="#"> ST-LLC Publications </a>
<ul class="submenu">
<li><a href="#"> Recent Publications</a>
</li>
<li><a href="#"> Past Publications</a>
</li>
</ul>
</li>
<li><a href="#"> Request for Proposals (RFP) </a>
</li>
<li><a href="#"> Contacts </a>
</li>
</ul>
</div>
<div id="meat">
<p>On June 6, 2004 the ASME Board of Governors (BOG) authorized</p>最佳答案
在你的子菜单上试试这个
#mainmenu .submenu {
display: none;
position: absolute;
top: 100%;
}
关于html - 导航子菜单将主体向下推，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/28504675/