【发布时间】：2016-04-29 18:34:15
【问题描述】：
我有带有一些菜单的顶部导航栏和带有一些菜单的侧面导航栏。我为垂直导航栏提供了样式，但它反映了所有导航栏并给了我图片中给出的输出enter image description here
谁能建议我如何分离垂直菜单的样式。垂直菜单样式从@media 开始
.top-color {
background-color: aquamarine;
margin-bottom: 0;
}
.firstmenu {
margin-bottom: 0;
}
@media (min-width: 768px) {
.navbar-collapse {
height: auto;
border-top: 0;
box-shadow: none;
max-height: none;
padding-left: 0;
padding-right: 0;
}
.navbar-collapse.collapse {
display: block !important;
width: auto !important;
padding-bottom: 0;
overflow: visible !important;
}
.navbar-collapse.in {
overflow-x: visible;
}
.navbar {
max-width: 300px;
margin-right: 0;
margin-left: 0;
}
.navbar-nav,
.navbar-nav > li,
.navbar-left,
.navbar-right,
.navbar-header {
float: none !important;
}
.navbar-right .dropdown-menu {
left: 0;
right: auto;
}
.navbar-collapse .navbar-nav.navbar-right:last-child {
margin-right: 0;
}
}<title>Bootstrap Case</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
</head>
<body>
<nav class="navbar top-color">
<!--nav header Div-->
<div class="container-fluid">
<div class="col-sm-1"><a class="navbar-head" style="text-decoration:none; color:white;" href="#"><h1>My Page</h1></a>
</div>
</div>
</nav>
<nav class="navbar navbar-inverse firstmenu">
<div class="container-fluid">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#myNavbar">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">WebSiteName</a>
</div>
<div class="collapse navbar-collapse" id="myNavbar">
<ul class="nav navbar-nav">
<li class="active"><a href="#">Home</a>
</li>
<li class="dropdown">
<a class="dropdown-toggle" data-toggle="dropdown" href="#">Page 1 <span class="caret"></span></a>
</li>
<li><a href="#">Page 2</a>
</li>
<li><a href="#">Page 3</a>
</li>
</ul>
</div>
</div>
</nav>
</body>
</html>
<nav class="navbar navbar-default" role="navigation">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-ex1-collapse">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">Brand</a>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse navbar-ex1-collapse">
<ul class="nav navbar-nav">
<li class="active"><a href="#">Link</a>
</li>
<li><a href="#">Link</a>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <b class="caret"></b></a>
<ul class="dropdown-menu">
<li><a href="#">Action</a>
</li>
<li><a href="#">Another action</a>
</li>
<li><a href="#">Something else here</a>
</li>
<li><a href="#">Separated link</a>
</li>
<li><a href="#">One more separated link</a>
</li>
</ul>
</li>
</ul>
<form class="navbar-form navbar-left" role="search">
<div class="form-group">
<input type="text" class="form-control" placeholder="Search">
</div>
<button type="submit" class="btn btn-default">Submit</button>
</form>
<ul class="nav navbar-nav navbar-right">
<li><a href="#">Link</a>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <b class="caret"></b></a>
<ul class="dropdown-menu">
<li><a href="#">Action</a>
</li>
<li><a href="#">Another action</a>
</li>
<li><a href="#">Something else here</a>
</li>
<li><a href="#">Separated link</a>
</li>
</ul>
</li>
</ul>
</div>
<!-- /.navbar-collapse -->
</nav>【问题讨论】：
-
当有 2 个元素具有相同的类名时，我们要么在这些类之前使用唯一的父类设置它们的样式，要么添加另一个唯一的类或 id 并使用它们设置样式
-
实际上我将其命名为 verticalmenu 并尝试了造型，但没有成功。
-
您已经在导航中有 2 个不同的类，它们是 navbar-inverse 和 navbar-default..so 在编写任何使用公共类的 CSS 规则之前，请在前面使用这些类，例如 .navbar-default .navbar -nav>li>a
标签： html css twitter-bootstrap