我想让 jumbotron 的背景图像具有完整尺寸,而无需以像素为单位说明高度。原因是我希望它能够响应。我还希望图像位于透明导航栏下方。
你可以看看这里
它的代码是:
<nav class="navbar-inner navbar-inverse">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
<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="#">Cosmos</a>
</div>
<div class="navbar-collapse collapse">
<ul class="nav navbar-nav pull-right">
<li><a href="#">Home</a></li>
<li><a href="#">About</a></li>
<li><a href="#">Portfolio</a></li>
<li><a href="#">Contact</a></li>
</ul>
</div>
</div>
</nav>
<div class="row">
<div class="col-md-12">
<div class="jumbotron" id="first">
<h1 class="text-center" id="h1first">
Welcome to Cosmos<br>
web design
</h1>
</div>
</div>
</div>
CSS是:
.navbar-inner {
background:transparent;
}
#first {
background-image: url(http://netdna.webdesignerdepot.com/uploads/2014/07/featured36.jpg);
background-size: cover;
height: 900px;
}