这是我的代码如下。当我调整窗口大小和导航栏崩溃时。在菜单的下拉列表中，内容似乎在旋转木马下面。我该如何将其推向前进？这是我的代码： HTML：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
<title>APT - Aviation | Travel | Hospitality</title>
<!-- Bootstrap -->
<link href="bootstrap/css/bootstrap.min.css" rel="stylesheet">
<link href="bootstrap/css/style.css" rel="stylesheet">
<!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body>
<nav class="navbar navbar-default" role="navigation">
<div class="container">
<!-- 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-brand-centered">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<div class="navbar-brand navbar-brand-centered">
<img src="images/apt-logo.gif">
</div>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="navbar-brand-centered">
<ul class="nav navbar-nav">
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Academy<span class="caret"></span></a>
<ul class="dropdown-menu" role="menu">
<li><a href="#">Training programs</a></li>
<li><a href="#">APT - 360 training</a></li>
</ul>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Admission<span class="caret"></span></a>
<ul class="dropdown-menu" role="menu">
<li><a href="#">Admission guide</a></li>
<li><a href="#" id="apply">Apply now</a></li>
</ul>
</li>
</ul>
<ul class="nav navbar-nav navbar-right">
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Placement<span class="caret"></span></a>
<ul class="dropdown-menu" role="menu">
<li><a href="#">Companies</a></li>
<li><a href="#">Highlights</a></li>
</ul>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">About<span class="caret"></span></a>
<ul class="dropdown-menu" role="menu">
<li><a href="#">Our story</a></li>
<li><a href="#">Training Methadology</a></li>
<li><a href="#">Contact</a></li>
</ul>
</li>
</ul>
</div><!-- /.navbar-collapse -->
</div><!-- /.container-fluid -->
</nav>
<div id="myCarousel" class="carousel slide" data-ride="carousel">
<!-- Indicators -->
<ol class="carousel-indicators">
<li data-target="#myCarousel" data-slide-to="0" class="active"></li>
<li data-target="#myCarousel" data-slide-to="1"></li>
<li data-target="#myCarousel" data-slide-to="2"></li>
<li data-target="#myCarousel" data-slide-to="3"></li>
</ol>
<!-- Wrapper for slides -->
<div class="carousel-inner" role="listbox">
<div class="item active">
<img src="http://www.skoda-auto.co.in/models/new-skoda-rapid/PublishingImages/Overview/Top/overview-top_New2.jpg" alt="Chania" width="100%" height="100%">
<div class="carousel-caption">
<h3>Chania</h3>
<p>The atmosphere in Chania has a touch of Florence and Venice.</p>
</div>
</div>
<div class="item">
<img src="http://www.skoda-auto.co.in/models/new-skoda-rapid/PublishingImages/Overview/Top/overview-top_New2.jpg" alt="Chania" width="100%" height="100%">
<div class="carousel-caption">
<h3>Chania</h3>
<p>The atmosphere in Chania has a touch of Florence and Venice.</p>
</div>
</div>
<div class="item">
<img src="http://www.skoda-auto.co.in/models/new-skoda-rapid/PublishingImages/Overview/Top/overview-top_New2.jpg" alt="Chania" width="100%" height="100%">
<div class="carousel-caption">
<h3>Chania</h3>
<p>The atmosphere in Chania has a touch of Florence and Venice.</p>
</div>
</div>
<div class="item">
<img src="http://www.skoda-auto.co.in/models/new-skoda-rapid/PublishingImages/Overview/Top/overview-top_New2.jpg" alt="Chania" width="100%" height="100%">
<div class="carousel-caption">
<h3>Chania</h3>
<p>The atmosphere in Chania has a touch of Florence and Venice.</p>
</div>
</div>
</div>
<!-- Left and right controls -->
<a class="left carousel-control" href="#myCarousel" role="button" data-slide="prev">
<span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
<span class="sr-only">Previous</span>
</a>
<a class="right carousel-control" href="#myCarousel" role="button" data-slide="next">
<span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
<span class="sr-only">Next</span>
</a>
</div>
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script src="bootstrap/js/bootstrap.min.js"></script>
</body>
</html>
和css：
body{
background: #f8f8f8;
}
.navbar-brand-centered {
position: absolute;
left: 50%;
display: block;
width: 160px;
text-align: center;
background-color: transparent;
}
.navbar>.container .navbar-brand-centered,
.navbar>.container-fluid .navbar-brand-centered {
margin-left: -80px;
}
nav{
height: 100px;
}
.navbar{
border-bottom: none;
}
@media only screen and (max-width: 500px){
.navbar-brand-centered {
left: 30%;
}
}
.navbar-header button{
margin-top: 50px;
}
.nav{
margin-top: 25px;
}
#apply{
padding-left: 19px;
font-weight: 600;
color:#419044;
}
#apply:hover{
text-decoration: none;
}
答案 0 :(得分：1)
我没看好您的代码，但我没有在任何地方看到z-index属性。你试过吗？将z-index：1放在要置于顶部的css类中。