Bootstrap崩溃的菜单滚动问题

Question

我在navbar-fixed-top上的Bootstrap折叠菜单上出现滚动问题，当它折叠时，菜单不垂直滚动，但页面开始滚动。 一切工作正常，当我设置navbar-static-top，但我真的需要坚持导航栏顶部。 任何帮助都非常明显。由于 请下面这段代码检查它，你也可以检查Bootply

.navbar-brand { position: relative; z-index: 2; } 
 

 
.navbar-nav.navbar-right .btn { position: relative; z-index: 2; padding: 4px 20px; margin: 10px auto; transition: transform 0.3s; } 
 

 
.navbar .navbar-collapse { position: relative; overflow: hidden !important; } 
 
.navbar .navbar-collapse .navbar-right > li:last-child { padding-left: 22px; } 
 

 
.navbar .nav-collapse { position: absolute; z-index: 1; top: 0; left: 0; right: 0; bottom: 0; margin: 0; padding-right: 120px; padding-left: 80px; width: 100%; } 
 
.navbar.navbar-default .nav-collapse { background-color: #f8f8f8; } 
 
.navbar.navbar-inverse .nav-collapse { background-color: #222; } 
 
.navbar .nav-collapse .navbar-form { border-width: 0; box-shadow: none; } 
 
.nav-collapse>li { float: right; } 
 

 
.btn.btn-circle { border-radius: 50px; } 
 
.btn.btn-outline { background-color: transparent; } 
 

 
.navbar-nav.navbar-right .btn:not(.collapsed) { 
 
    background-color: rgb(111, 84, 153); 
 
    border-color: rgb(111, 84, 153); 
 
    color: rgb(255, 255, 255); 
 
} 
 

 
.navbar.navbar-default .nav-collapse, 
 
.navbar.navbar-inverse .nav-collapse { 
 
    height: auto !important; 
 
    transition: transform 0.3s; 
 
    transform: translate(0px,-50px); 
 
} 
 
.navbar.navbar-default .nav-collapse.in, 
 
.navbar.navbar-inverse .nav-collapse.in { 
 
    transform: translate(0px,0px); 
 
} 
 
#Searchbox{width:500px;} 
 

 

 
@media screen and (max-width: 767px) { 
 
    .navbar .navbar-collapse .navbar-right > li:last-child { padding-left: 15px; padding-right: 15px; } 
 
    
 
    .navbar .nav-collapse { margin: 7.5px auto; padding: 0; } 
 
    .navbar .nav-collapse .navbar-form { margin: 0; } 
 
    .nav-collapse>li { float: none; } 
 
    
 
    .navbar.navbar-default .nav-collapse, 
 
    .navbar.navbar-inverse .nav-collapse { 
 
     transform: translate(-100%,0px); 
 
    } 
 
    .navbar.navbar-default .nav-collapse.in, 
 
    .navbar.navbar-inverse .nav-collapse.in { 
 
     transform: translate(0px,0px); 
 
    } 
 
    
 
    .navbar.navbar-default .nav-collapse.slide-down, 
 
    .navbar.navbar-inverse .nav-collapse.slide-down { 
 
     transform: translate(0px,-100%); 
 
    } 
 
    .navbar.navbar-default .nav-collapse.in.slide-down, 
 
    .navbar.navbar-inverse .nav-collapse.in.slide-down { 
 
     transform: translate(0px,0px); 
 
    } 
 
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 
 
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.0/css/bootstrap.min.css"> 
 
<script src="//netdna.bootstrapcdn.com/bootstrap/3.1.0/js/bootstrap.min.js"></script> 
 

 

 
    <nav class="navbar navbar-inverse navbar-fixed-top"> 
 
     <div class="container"> 
 
     <!-- Brand and toggle get grouped for better mobile display --> 
 
     <div class="navbar-header"> 
 
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar-collapse-3"> 
 
      <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" id="navbar-collapse-3"> 
 
        <ul class="nav navbar-nav"> 
 
     <li class="active"><a href="#">Home</a></li> 
 
     <li class="dropdown "><a href="#" id="drop1" data-toggle="dropdown" class="dropdown-toggle" role="button">Music <b class="caret"></b></a> 
 
      <ul role="menu" class="dropdown-menu" aria-labelledby="drop1"> 
 
       <li role="presentation"><a href="#" role="menuitem">Grones</a></li> 
 
       <li role="presentation"><a href="#" role="menuitem">Nach</a></li> 
 
       <li role="presentation"><a href="#" role="menuitem">Zpu</a></li> 
 
       <li role="presentation"><a href="#" role="menuitem">Madnass</a></li> 
 
      </ul> 
 
     </li> 
 
     <li><a href="#contact">Contact</a></li> 
 
     </ul> 
 
      
 
      <ul class="nav navbar-nav navbar-right"> 
 
      <li><a href="#">Home</a></li> 
 
      <li><a href="#">About</a></li> 
 
      <li><a href="#">Services</a></li> 
 
      <li><a href="#">Works</a></li> 
 
      <li><a href="#">News</a></li> 
 
      <li><a href="#">Contact</a></li> 
 
      <li> 
 
       <a class="btn btn-default collapsed" data-toggle="collapse" href="#nav-collapse3" aria-expanded="false" aria-controls="nav-collapse3">Search</a> 
 
      </li> 
 
      </ul> 
 
      <div class="collapse nav navbar-nav nav-collapse slide-down" id="nav-collapse3"> 
 
      <form class="navbar-form navbar-right" role="search"> 
 
       <div class="form-group"> 
 
       <input type="text" class="form-control" placeholder="Search"> 
 
       </div> 
 
       <button type="submit" class="btn btn-danger"><span class="glyphicon glyphicon-search" aria-hidden="true"></span></button> 
 
      </form> 
 
      </div> 
 
     </div><!-- /.navbar-collapse --> 
 
     </div><!-- /.container --> 
 
    </nav><!-- /.navbar --> 
 
    
 
<div class="container body-content" style="margin-top:60px;"> 
 
    <div class="row" style="padding:10px;"> 
 
      asdfasdf<br> 
 
      asdfas 
 
      df<br> 
 
      sadf<br> 
 
      asdf<br> 
 
      a<br> 
 
      sdf<br> 
 
      sad<br> 
 
      f<br> 
 
      sadf<br> 
 
      as<br> 
 
      df<br> 
 
      sadf<br> 
 
      sa<br> 
 
      df<br> 
 
        </div> 
 
    </div>

Answer 1

这条规则的代码导致您的问题：

.navbar .navbar-collapse { position: relative; overflow: hidden !important; } 

删除overflow: hidden !important

请参阅工作示例代码段。 *我还调整了您的搜索按钮，以免它被切断。

body { 
 
    padding-top: 70px; 
 
} 
 
.navbar-brand { 
 
    position: relative; 
 
    z-index: 2; 
 
} 
 
.navbar-nav.navbar-right .btn { 
 
    position: relative; 
 
    z-index: 2; 
 
    padding: 4px 20px; 
 
    margin: 10px auto; 
 
    transition: transform 0.3s; 
 
} 
 
.navbar .navbar-collapse { 
 
    position: relative; 
 
} 
 
.navbar .navbar-collapse .navbar-right > li:last-child { 
 
    padding-left: 22px; 
 
    right: 15px; 
 
} 
 
.navbar .nav-collapse { 
 
    position: absolute; 
 
    z-index: 1; 
 
    top: 0; 
 
    left: 0; 
 
    right: 0; 
 
    bottom: 0; 
 
    margin: 0; 
 
    padding-right: 120px; 
 
    padding-left: 80px; 
 
    width: 100%; 
 
} 
 
.navbar.navbar-default .nav-collapse { 
 
    background-color: #f8f8f8; 
 
} 
 
.navbar.navbar-inverse .nav-collapse { 
 
    background-color: #222; 
 
} 
 
.navbar .nav-collapse .navbar-form { 
 
    border-width: 0; 
 
    box-shadow: none; 
 
} 
 
.nav-collapse>li { 
 
    float: right; 
 
} 
 
.btn.btn-circle { 
 
    border-radius: 50px; 
 
} 
 
.btn.btn-outline { 
 
    background-color: transparent; 
 
} 
 
.navbar-nav.navbar-right .btn:not(.collapsed) { 
 
    background-color: rgb(111, 84, 153); 
 
    border-color: rgb(111, 84, 153); 
 
    color: rgb(255, 255, 255); 
 
} 
 
.navbar.navbar-default .nav-collapse, 
 
.navbar.navbar-inverse .nav-collapse { 
 
    height: auto !important; 
 
    transition: transform 0.3s; 
 
    transform: translate(0px, -50px); 
 
} 
 
.navbar.navbar-default .nav-collapse.in, 
 
.navbar.navbar-inverse .nav-collapse.in { 
 
    transform: translate(0px, 0px); 
 
} 
 
#Searchbox { 
 
    width: 500px; 
 
} 
 
@media screen and (max-width: 767px) { 
 
    .navbar .navbar-collapse .navbar-right > li:last-child { 
 
    padding-left: 15px; 
 
    padding-right: 15px; 
 
    right: 0; 
 
    } 
 
    .navbar .nav-collapse { 
 
    margin: 7.5px auto; 
 
    padding: 0; 
 
    } 
 
    .navbar .nav-collapse .navbar-form { 
 
    margin: 0; 
 
    } 
 
    .nav-collapse>li { 
 
    float: none; 
 
    } 
 
    .navbar.navbar-default .nav-collapse, 
 
    .navbar.navbar-inverse .nav-collapse { 
 
    transform: translate(-100%, 0px); 
 
    } 
 
    .navbar.navbar-default .nav-collapse.in, 
 
    .navbar.navbar-inverse .nav-collapse.in { 
 
    transform: translate(0px, 0px); 
 
    } 
 
    .navbar.navbar-default .nav-collapse.slide-down, 
 
    .navbar.navbar-inverse .nav-collapse.slide-down { 
 
    transform: translate(0px, -100%); 
 
    } 
 
    .navbar.navbar-default .nav-collapse.in.slide-down, 
 
    .navbar.navbar-inverse .nav-collapse.in.slide-down { 
 
    transform: translate(0px, 0px); 
 
    } 
 
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> 
 
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script> 
 
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet" /> 
 
<nav class="navbar navbar-inverse navbar-fixed-top"> 
 
    <div class="container"> 
 
    <div class="navbar-header"> 
 
     <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar-collapse-3"> <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> 
 
    <div class="collapse navbar-collapse" id="navbar-collapse-3"> 
 
     <ul class="nav navbar-nav"> 
 
     <li class="active"><a href="#">Home</a> 
 

 
     </li> 
 
     <li class="dropdown "><a href="#" id="drop1" data-toggle="dropdown" class="dropdown-toggle" role="button">Music <b class="caret"></b></a> 
 

 
      <ul role="menu" class="dropdown-menu" aria-labelledby="drop1"> 
 
      <li role="presentation"><a href="#" role="menuitem">Grones</a> 
 

 
      </li> 
 
      <li role="presentation"><a href="#" role="menuitem">Nach</a> 
 

 
      </li> 
 
      <li role="presentation"><a href="#" role="menuitem">Zpu</a> 
 

 
      </li> 
 
      <li role="presentation"><a href="#" role="menuitem">Madnass</a> 
 

 
      </li> 
 
      </ul> 
 
     </li> 
 
     <li><a href="#contact">Contact</a> 
 

 
     </li> 
 
     </ul> 
 
     <ul class="nav navbar-nav navbar-right"> 
 
     <li><a href="#">About</a> 
 

 
     </li> 
 
     <li><a href="#">Services</a> 
 

 
     </li> 
 
     <li><a href="#">Works</a> 
 

 
     </li> 
 
     <li><a href="#">News</a> 
 

 
     </li> 
 
     <li> <a class="btn btn-default collapsed" data-toggle="collapse" href="#nav-collapse3" aria-expanded="false" aria-controls="nav-collapse3">Search</a> 
 

 
     </li> 
 
     </ul> 
 
     <div class="collapse nav navbar-nav nav-collapse slide-down" id="nav-collapse3"> 
 
     <form class="navbar-form navbar-right" role="search"> 
 
      <div class="form-group"> 
 
      <input type="text" class="form-control" placeholder="Search"> 
 
      </div> 
 
      <button type="submit" class="btn btn-danger"><span class="glyphicon glyphicon-search" aria-hidden="true"></span> 
 

 
      </button> 
 
     </form> 
 
     </div> 
 
    </div> 
 
    </div> 
 
</nav> 
 
<div class="container"> 
 
    <div class="well">well</div> 
 
    <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It 
 
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop 
 
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p> 
 
    <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It 
 
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop 
 
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p> 
 
    <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It 
 
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop 
 
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p> 
 
    <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It 
 
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop 
 
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p> 
 
    <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It 
 
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop 
 
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p> 
 
    <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It 
 
    has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop 
 
    publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p> 
 
</div>