让导航条固定在顶部给body设置了padding-top：70px 为啥还是会遮住内容呢？请大家复制我的代码帮我看一下谢谢了<!DOCTYPE html><html> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>现代浏览器博物馆</title> <!-- Bootstrap --> <link href="css/bootstrap.min.css" rel="stylesheet"> <!--[if lt IE 9]> <script src="js/html5shiv.js"></script> <script src="js/respond.min.js"></script> <![endif]--> <style> body{ padding-top:70px; } </style> </head> <body> <nav class="navbar navbar-inverse navbar-fixed-top" role="navigation"> <div> <!-- Brand and toggle get grouped for better mobile display --> <div>
<button type="button" class="navbar-toggle collapsed"
data-toggle="collapse" data-target="#bs-example-navbar-collapse-1"> <span>Toggle navigation</span> <span></span> <span></span> <span></span> </button> <a href="#">现代浏览器博物馆</a> </div> <!-- Collect the nav links, forms, and other content for toggling --> <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1"> <ul class="nav navbar-nav"> <li><a href="#">综述</a></li> <li><a href="#">简述</a></li> <li> <a href="#" data-toggle="dropdown">特点 <span></span></a> <ul role="menu"> <li><a href="#feature-tab" data-tab="tab-chrome">Chrome</a></li> <li><a href="#feature-tab" data-tab="tab-firefox">Firefox</a></li> <li><a href="#feature-tab" data-tab="tab-safari">Safari</a></li> <li><a href="#feature-tab" data-tab="tab-opera">Opera</a></li> <li><a href="#feature-tab" data-tab="tab-ie">IE</a></li> </ul> </li> <li><a href="#">关于</a></li> </ul> </div><!-- /.navbar-collapse --> </div><!-- /.container-fluid --></nav><p>dfghjkjhgfds</p><p>1111111111111</p><p>2222222222222222222222</p><p>dfghjkjhgfds</p><p>1111111111111</p><p>2222222222222222222222</p><p>dfghjkjhgfds</p><p>1111111111111</p><p>2222222222222222222222</p><p>dfghjkjhgfds</p><p>1111111111111</p><p>2222222222222222222222</p><p>dfghjkjhgfds</p><p>1111111111111</p><p>2222222222222222222222</p><p>dfghjkjhgfds</p><p>1111111111111</p><p>2222222222222222222222</p><p>dfghjkjhgfds</p><p>1111111111111</p><p>2222222222222222222222</p><p>dfghjkjhgfds</p><p>1111111111111</p><p>2222222222222222222222</p><p>dfghjkjhgfds</p><p>1111111111111</p><p>2222222222222222222222</p><p>dfghjkjhgfds</p><p>1111111111111</p><p>2222222222222222222222</p> <!-- jQuery (necessary for Bootstrap's JavaScript plugins) --> <script src="js/jquery-1.11.1.min.js"></script> <!-- Include all compiled plugins (below), or include individual files as needed --> <script src="js/bootstrap.min.js"></script> </body></html>
3 回答
幕布斯7574896
TA贡献38条经验 获得超3个赞
因为你的导航栏不符合bootstrap的规范，导致元素错位。你要是设置padding-top一个足够大的数字，也是可以显示的，不过这也是错误的，正确的方式还是添加相应类名：
<nav class="navbar navbar-inverse navbar-fixed-top" role="navigation"> <div class="navbar-header> <!-- Brand and toggle get grouped for better mobile display --> <div> <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#example-navbar-collapse"> <span class="sr-only">切换导航</span> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> <a class="navbar-brand" href="#">现代浏览器博物馆</a> </div> <!-- Collect the nav links, forms, and other content for toggling --> <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1"> <ul class="nav navbar-nav"> <li><a href="#">综述</a></li> <li><a href="#">简述</a></li> <li class="dropdown"> <a class="dropdown-toggle" href="#" data-toggle="dropdown">特点 <span class="caret"></span></a> <ul class="dropdown-menu" role="menu"> <li><a href="#feature-tab" data-tab="tab-chrome">Chrome</a></li> <li><a href="#feature-tab" data-tab="tab-firefox">Firefox</a></li> <li><a href="#feature-tab" data-tab="tab-safari">Safari</a></li> <li><a href="#feature-tab" data-tab="tab-opera">Opera</a></li> <li><a href="#feature-tab" data-tab="tab-ie">IE</a></li> </ul> </li> <li><a href="#">关于</a></li> </ul> </div><!-- /.navbar-collapse --> </div><!-- /.container-fluid --> </nav>
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