我正在尝试设计一个带有水平导航栏和侧栏的网站。当我添加阻碍子菜单的div（内容）
时，问题就出现了我正在添加代码供您参考。请帮帮我
html,
body {
height: 100%;
margin: 0;
padding: 0;
-webkit-user-select: none;
-moz-user-select: -moz-none;
-ms-user-select: none;
user-select: none;
}
.header {
width: 100%;
height: 60px;
}
/*http://jsfiddle.net/EnKwU/4/*/
.nav {
text-align: center;
width: 85%;
padding: 10px;
margin: 12px 50px 50px 120px;
float: left;
}
.nav ul ul {
display: none;
position: fixed;
}
.nav ul li:hover > ul {
display: block;
}
.nav ul {
background-color: #fff;
margin-top: 10px;
padding: 0 20px;
list-style: none;
position: relative;
display: inline-block;
zoom: 1;
*display: inline;
margin-right: -80px;
font-family: 'Lato', sans-serif;
text-transform: uppercase;
font-size: 1em;
}
.nav ul li {
float: left;
}
.nav ul li:hover {
border-bottom: 5px solid #339966;
color: #fff;
}
.nav ul li a:hover {
color: #ffffff;
background: #1bbc9b;
}
.nav ul li a {
display: block;
padding: 0.3em 0.8em;
font-family: 'Lato', sans-serif;
font-size: 0.9em;
color: #444;
text-decoration: none;
}
.nav ul ul {
background-color: #fff;
border-radius: 0;
padding: 0;
position: absolute;
top: 100%;
box-shadow: 0 0 9px rgba(0, 0, 0, 0.15);
}
.nav ul ul li {
float: none;
position: relative;
font-family: 'Lato', sans-serif;
text-transform: uppercase;
font-size: 0.85em;
}
.nav ul ul li a {
padding: 0.4em 1.2em;
color: #000;
font-family: 'Lato', sans-serif;
text-transform: uppercase;
font-size: 1em;
}
.nav ul ul:before {
content: "";
display: block;
height: 20px;
position: absolute;
top: -20px;
width: 100%;
}
.nav1 {
position: absolute;
left: 25px;
top: 160px;
bottom: 0;
width: 25%;
float: left;
}
.content {
border: 1px solid black;
position: absolute;
left: 26%;
top: 140px;
bottom: 0;
width: 75%;
float: left;
}
/*http://www.9lessons.info/2012/06/simple-drop-down-menu-with-jquery-and.html*/
.dropdown {
color: #555;
margin: 3px -22px 0 0;
width: 143px;
position: relative;
height: 17px;
text-align: left;
float: right;
}
.submenu {
background: #fff;
position: absolute;
top: -12px;
left: -20px;
z-index: 100;
width: 135px;
display: none;
margin-left: 10px;
padding: 40px 0 5px;
border-radius: 6px;
box-shadow: 0 2px 8px rgba(0, 0, 0, 0.45);
clear: both;
}
.dropdown li a {
color: #555555;
display: block;
font-family: arial;
font-weight: bold;
padding: 6px 15px;
cursor: pointer;
text-decoration: none;
}
.dropdown li a:hover {
background: #155FB0;
color: #FFFFFF;
text-decoration: none;
}
a.account {
font-size: 11px;
line-height: 16px;
color: #555;
position: absolute;
z-index: 110;
display: block;
padding: 11px 0 0 20px;
height: 28px;
width: 121px;
margin: -11px 0 0 -10px;
text-decoration: none;
background: url(icons/arrow.png) 116px 17px no-repeat;
cursor: pointer;
}
.root {
list-style: none;
margin: 0px;
padding: 0px;
font-size: 11px;
padding: 11px 0 0 0px;
border-top: 1px solid #dedede;
}
/* http://codepen.io/daniesy/pen/pfxFi
icons : http://fontawesome.io/
*/
* {
padding: 0;
margin: 0;
font-family: 'Lato', sans-serif;
box-sizing: border-box;
}
.float-right {
float: right;
}
.fa {
font-size: .8em;
line-height: 22px !important;
}
.nav1 {
display: inline-block;
margin: 20px 50px;
}
.nav1 label {
display: block;
width: 250px;
background: #ECF0F1;
padding: 15px 20px;
}
.nav1 ul li {
display: block;
width: 250px;
background: #ECF0F1;
padding: 15px 20px;
}
.nav1 label:hover {
background: #1ABC9C;
color: white;
cursor: pointer;
}
.nav1 ul li:hover {
background: #1ABC9C;
color: white;
cursor: pointer;
}
.nav1 label {
color: #1ABC9C;
border-left: 4px solid #1ABC9C;
border-radius: 0 5px 0 0;
position: relative;
z-index: 2;
}
.nav1 input {
display: none;
}
.nav1 input ~ ul {
position: relative;
visibility: hidden;
opacity: 0;
top: -20px;
z-index: 1;
}
.nav1 input:checked + label {
background: #1ABC9C;
color: white;
}
.nav1 input:checked ~ ul {
visibility: visible;
opacity: 1;
top: 0;
}
.nav1 ul li a {
text-decoration: none;
}
.nav1 ul li:nth-child(1) {
border-left: 4px solid #E74C3C;
}
.nav1 ul li:nth-child(1) .fa {
color: #E74C3C;
}
.nav1 ul li:nth-child(1):hover {
background: #E74C3C;
color: white;
font-weight: bold;
}
.nav1 ul li:nth-child(2) {
border-left: 4px solid #0072B5;
}
.nav1 ul li:nth-child(2) .fa {
color: #0072B5;
}
.nav1 ul li:nth-child(2):hover {
background: #0072B5;
color: white;
font-weight: bold;
}
.nav1 ul li:nth-child(3) {
border-left: 4px solid #EC1559;
}
.nav1 ul li:nth-child(3) .fa {
color: #EC1559;
}
.nav1 ul li:nth-child(3):hover {
background: #EC1559;
color: white;
font-weight: bold;
}<!DOCTYPE html>
<html>
<head>
<link href="menu.css" rel="stylesheet" type="text/css">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
<script type="text/javascript" src="jquery.min.js"></script>
<script type="text/javascript" src="jquery.ajax.js"></script>
<script type="text/javascript" src="js/func.js"></script>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- Compliance patch for Microsoft browsers -->
<!--[if lt IE 9]><script src="js/IE9.js"></script><![endif]-->
</head>
<body>
<!---header and side bar for user name and logout menu -starts here -->
<div class="header">
<div class="dropdown">
<a class="account">
<?php $y=$ _SESSION[ 'user']; echo "UserID: $y";?>
</a>
<div class="submenu">
<ul class="root">
<li><a href="#Dashboard">Dashboard</a>
</li>
<li><a href="#Profile">Profile</a>
</li>
<li><a href="#settings">Settings</a>
</li>
<li><a href="logout.php">LogOut</a>
</li>
</ul>
</div>
</div>
</div>
<!--header ended here-->
<!--horizantal navigation bar starts here -->
<div class="nav">
<ul>
<li><a href="home.php">Home</a>
</li>
<li><a href="#">Portfolio</a>
<ul>
<li><a href="AD1.php">Active Directory</a>
<li><a href="#">HelpDesk</a>
<li><a href="#">CTS</a>
<li><a href="#">Exchange/Infra</a>
<li><a href="#">Others</a>
</ul>
</li>
<li><a href="#">Downloads</a>
</li>
<li><a href="#">Blog</a>
</li>
<li><a href="#">News</a>
</li>
<li><a href="#">Contact US</a>
</li>
</ul>
</div>
<div class="nav1">
<label for="toggle2" id="kl">Active Directory</label>
<ul class="animate" style="display:none" id="kll">
<li class="animate"><a href="submit.php">Create Domain User</a>
</li>
<li class="animate"><a href="#">Domain Password Reset</a>
</li>
<li class="animate"><a href="#">Domain Joining</a>
</li>
</ul>
</div>
<div class="content">
</div>
</body>
</html>
答案 0 :(得分：1)
html,
body {
height: 100%;
margin: 0;
padding: 0;
-webkit-user-select: none;
-moz-user-select: -moz-none;
-ms-user-select: none;
user-select: none;
}
.header {
width: 100%;
height: 60px;
}
/*http://jsfiddle.net/EnKwU/4/*/
.nav {
text-align: center;
width: 85%;
padding: 10px;
margin: 12px 50px 50px 120px;
float: left;
}
.nav ul ul {
display: none;
position: fixed;
z-index:999;
}
.nav ul li:hover > ul {
display: block;
}
.nav ul {
background-color: #fff;
margin-top: 10px;
padding: 0 20px;
list-style: none;
position: relative;
display: inline-block;
zoom: 1;
*display: inline;
margin-right: -80px;
font-family: 'Lato', sans-serif;
text-transform: uppercase;
font-size: 1em;
}
.nav ul li {
float: left;
}
.nav ul li:hover {
border-bottom: 5px solid #339966;
color: #fff;
}
.nav ul li a:hover {
color: #ffffff;
background: #1bbc9b;
}
.nav ul li a {
display: block;
padding: 0.3em 0.8em;
font-family: 'Lato', sans-serif;
font-size: 0.9em;
color: #444;
text-decoration: none;
}
.nav ul ul {
background-color: #fff;
border-radius: 0;
padding: 0;
position: absolute;
top: 100%;
box-shadow: 0 0 9px rgba(0, 0, 0, 0.15);
}
.nav ul ul li {
float: none;
position: relative;
font-family: 'Lato', sans-serif;
text-transform: uppercase;
font-size: 0.85em;
}
.nav ul ul li a {
padding: 0.4em 1.2em;
color: #000;
font-family: 'Lato', sans-serif;
text-transform: uppercase;
font-size: 1em;
}
.nav ul ul:before {
content: "";
display: block;
height: 20px;
position: absolute;
top: -20px;
width: 100%;
}
.nav1 {
position: absolute;
left: 25px;
top: 160px;
bottom: 0;
width: 25%;
float: left;
}
.content {
border: 1px solid black;
position: absolute;
left: 26%;
top: 140px;
bottom: 0;
width: 75%;
float: left;
}
/*http://www.9lessons.info/2012/06/simple-drop-down-menu-with-jquery-and.html*/
.dropdown {
color: #555;
margin: 3px -22px 0 0;
width: 143px;
position: relative;
height: 17px;
text-align: left;
float: right;
}
.submenu {
background: #fff;
position: absolute;
top: -12px;
left: -20px;
z-index: 100;
width: 135px;
display: none;
margin-left: 10px;
padding: 40px 0 5px;
border-radius: 6px;
box-shadow: 0 2px 8px rgba(0, 0, 0, 0.45);
clear: both;
}
.dropdown li a {
color: #555555;
display: block;
font-family: arial;
font-weight: bold;
padding: 6px 15px;
cursor: pointer;
text-decoration: none;
}
.dropdown li a:hover {
background: #155FB0;
color: #FFFFFF;
text-decoration: none;
}
a.account {
font-size: 11px;
line-height: 16px;
color: #555;
position: absolute;
z-index: 110;
display: block;
padding: 11px 0 0 20px;
height: 28px;
width: 121px;
margin: -11px 0 0 -10px;
text-decoration: none;
background: url(icons/arrow.png) 116px 17px no-repeat;
cursor: pointer;
}
.root {
list-style: none;
margin: 0px;
padding: 0px;
font-size: 11px;
padding: 11px 0 0 0px;
border-top: 1px solid #dedede;
}
/* http://codepen.io/daniesy/pen/pfxFi
icons : http://fontawesome.io/
*/
* {
padding: 0;
margin: 0;
font-family: 'Lato', sans-serif;
box-sizing: border-box;
}
.float-right {
float: right;
}
.fa {
font-size: .8em;
line-height: 22px !important;
}
.nav1 {
display: inline-block;
margin: 20px 50px;
}
.nav1 label {
display: block;
width: 250px;
background: #ECF0F1;
padding: 15px 20px;
}
.nav1 ul li {
display: block;
width: 250px;
background: #ECF0F1;
padding: 15px 20px;
}
.nav1 label:hover {
background: #1ABC9C;
color: white;
cursor: pointer;
}
.nav1 ul li:hover {
background: #1ABC9C;
color: white;
cursor: pointer;
}
.nav1 label {
color: #1ABC9C;
border-left: 4px solid #1ABC9C;
border-radius: 0 5px 0 0;
position: relative;
z-index: 2;
}
.nav1 input {
display: none;
}
.nav1 input ~ ul {
position: relative;
visibility: hidden;
opacity: 0;
top: -20px;
z-index: 1;
}
.nav1 input:checked + label {
background: #1ABC9C;
color: white;
}
.nav1 input:checked ~ ul {
visibility: visible;
opacity: 1;
top: 0;
}
.nav1 ul li a {
text-decoration: none;
}
.nav1 ul li:nth-child(1) {
border-left: 4px solid #E74C3C;
}
.nav1 ul li:nth-child(1) .fa {
color: #E74C3C;
}
.nav1 ul li:nth-child(1):hover {
background: #E74C3C;
color: white;
font-weight: bold;
}
.nav1 ul li:nth-child(2) {
border-left: 4px solid #0072B5;
}
.nav1 ul li:nth-child(2) .fa {
color: #0072B5;
}
.nav1 ul li:nth-child(2):hover {
background: #0072B5;
color: white;
font-weight: bold;
}
.nav1 ul li:nth-child(3) {
border-left: 4px solid #EC1559;
}
.nav1 ul li:nth-child(3) .fa {
color: #EC1559;
}
.nav1 ul li:nth-child(3):hover {
background: #EC1559;
color: white;
font-weight: bold;
}<!DOCTYPE html>
<html>
<head>
<link href="menu.css" rel="stylesheet" type="text/css">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
<script type="text/javascript" src="jquery.min.js"></script>
<script type="text/javascript" src="jquery.ajax.js"></script>
<script type="text/javascript" src="js/func.js"></script>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- Compliance patch for Microsoft browsers -->
<!--[if lt IE 9]><script src="js/IE9.js"></script><![endif]-->
</head>
<body>
<!---header and side bar for user name and logout menu -starts here -->
<div class="header">
<div class="dropdown">
<a class="account">
<?php $y=$ _SESSION[ 'user']; echo "UserID: $y";?>
</a>
<div class="submenu">
<ul class="root">
<li><a href="#Dashboard">Dashboard</a>
</li>
<li><a href="#Profile">Profile</a>
</li>
<li><a href="#settings">Settings</a>
</li>
<li><a href="logout.php">LogOut</a>
</li>
</ul>
</div>
</div>
</div>
<!--header ended here-->
<!--horizantal navigation bar starts here -->
<div class="nav">
<ul>
<li><a href="home.php">Home</a>
</li>
<li><a href="#">Portfolio</a>
<ul>
<li><a href="AD1.php">Active Directory</a>
<li><a href="#">HelpDesk</a>
<li><a href="#">CTS</a>
<li><a href="#">Exchange/Infra</a>
<li><a href="#">Others</a>
</ul>
</li>
<li><a href="#">Downloads</a>
</li>
<li><a href="#">Blog</a>
</li>
<li><a href="#">News</a>
</li>
<li><a href="#">Contact US</a>
</li>
</ul>
</div>
<div class="nav1">
<label for="toggle2" id="kl">Active Directory</label>
<ul class="animate" style="display:none" id="kll">
<li class="animate"><a href="submit.php">Create Domain User</a>
</li>
<li class="animate"><a href="#">Domain Password Reset</a>
</li>
<li class="animate"><a href="#">Domain Joining</a>
</li>
</ul>
</div>
<div class="content">
</div>
</body>
</html>
答案 1 :(得分：0)
您只需增加子菜单的z-index即可。添加
.nav ul ul{
z-index:99;
}
z-index属性指定元素的z顺序及其顺序 后人。当元素重叠时，z顺序决定哪一个 涵盖了另一个。具有较大z指数的元素通常覆盖一个 较低的元素。
虽然在这种情况下99的值可能过大，但z-index有效地决定了相关元素的分层优先级。请注意，为了应用，该元素还需要position集（您的子菜单已经存在）
答案 2 :(得分：0)
添加
.content{
z-index: -100;
}
内容就像成为下拉菜单项的叠加层。所以光标活动范围就丢失了。
或为菜单
添加正值的z-index