我已经尝试了以下代码，由于某种原因，我的背景图片并没有占用整个页面，它只覆盖了导航栏。我应该在以下代码中更改什么？另外，如何使导航栏跨越网页的整个宽度？
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Example of Bootstrap 3 Static Navbar</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap-theme.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<style type="text/css">
.bs-example{
margin: 20px;
}
</style>
</head>
<body>
<div class="container" style="background-image:url('tp.jpg');">
<div class="bs-example">
<nav id="myNavbar" class="navbar navbar-inverse">
<div class="container-fluid">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
<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="#">TNP</a>
</div>
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li><a href="#">Home</a></li>
<li class="dropdown">
<a href="#" data-toggle="dropdown" class="dropdown-toggle">Companies<b class="caret"></b></a>
<ul class="dropdown-menu">
<li class="dropdown">
<li><a href="#">Rakuten</a></li>
<li><a href="#">Morgan Stanley</a></li>
<li><a href="#">TCS</a></li>
<li><a href="#">Nvidia</a></li>
</ul>
</li>
<li class="dropdown">
<a href="#" data-toggle="dropdown" class="dropdown-toggle">Student <b class="caret"></b></a>
<ul class="dropdown-menu">
<li><a href="#">Login</a></li>
<li><a href="#">Drafts</a></li>
<li><a href="#">Sent Items</a></li>
<li class="divider"></li>
<li><a href="#">Trash</a></li>
</ul>
</li>
</div>
</div>
</nav>
</div>
</div>
</body>
</html>
答案 0 :(得分：3)