Bootstrap导航栏下拉菜单按钮在导航栏处于折叠状态的汉堡包时不显示

Question

我有一个带有CSS媒体查询的boostrap导航栏，可将其折叠并在屏幕低于特定尺寸时通过汉堡按钮打开它（适用于移动设备）。但是，我的导航栏中还有一个下拉菜单，当导航栏全屏展开时正常工作，但当我从导航栏的汉堡版中打开它时，下拉菜单中的按钮不显示。

宽屏幕 - 导航条下拉正常工作：

窄屏幕（汉堡） - 下拉菜单按钮不会显示：

下面是为导航栏的HTML代码：

<nav class="navbar navbar-default" data-spy="affix" data-offset-top="900"> 
    <div class="container-fluid"> 
    <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="Son Of The Right Hand v.0.html#postWelcome">Son of the Right Hand</a> 
    </div> 


    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1"> 
     <ul class="nav navbar-nav"> 
     <li class="active" id="home"><a href="Son Of The Right Hand v.0.html#postWelcome">Home <span class="sr-only">(current)</span></a></li> 
     <li><a href="#">What is tSotRH?</a></li> 
     <li><a href="#">About Me</a></li> 
     <li class="dropdown"> 
      <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Streams <span class="caret"></span></a> 
      <ul class="dropdown-menu pinkBackground"> 
      <li><a style="color:#062F4F" href="#">Stream 1</a></li> 
      <li><a style="color:#062F4F" href="#">Stream 2</a></li> 
      <li><a style="color:#062F4F" href="#">Stream 3</a></li> 
      </ul> 
     </li> 
     </ul> 


    </div> 
</nav> 

这是折叠导航栏的CSS媒体查询：

@media (min-width: 768px) { 
    .navbar .navbar-nav { 
     display: inline-block; 
     float: none; 
     vertical-align: top; 

    } 

    .navbar .navbar-collapse { 
     text-align: center; 
    } 
} 

这是我的导航栏的CSS代码：

.navbar-default { 
    z-index: 1; 
    background-color: #062F4F; 
    border-color: #062F4F; 
} 
/* title */ 
.navbar-default .navbar-brand { 
    color: #FFFFFF; 
} 
.navbar-default .navbar-brand:hover, 
.navbar-default .navbar-brand:focus { 
    color: #813772; 
} 
/* link */ 
.navbar-default .navbar-nav > li > a { 
    color: #FFFFFF; 
} 
.navbar-default .navbar-nav > li > a:hover, 
.navbar-default .navbar-nav > li > a:focus { 
    color: #813772; 
} 
.navbar-default .navbar-nav > .active > a, 
.navbar-default .navbar-nav > .active > a:hover, 
.navbar-default .navbar-nav > .active > a:focus { 
    color: #FFFFFF; 
    background-color: #813772; 
} 
.navbar-default .navbar-nav > .open > a, 
.navbar-default .navbar-nav > .open > a:hover, 
.navbar-default .navbar-nav > .open > a:focus { 
    color: #FFFFFF; 
    background-color: #062F4F; 
} 
/* caret */ 
.navbar-default .navbar-nav > .dropdown > a .caret { 
    border-top-color: #000000; 
    border-bottom-color: #000000; 
} 

任何帮助是非常赞赏，为什么当菜单从与汉堡按钮collaped（也拉开了导航栏的下拉按钮不显示，我意识到它很可能会是一个非常愚蠢和简单的错误，但我找不到）

Answer 1

这就是工作正常，但锚点的颜色是一样的背景，你必须使用类为此和改变颜色与媒体屏幕或让手机上的默认引导程序颜色（灰色）

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 
 
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> 
 
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/> 
 
<style> 
 
    .navbar-default { 
 
    z-index: 1; 
 
    background-color: #062F4F; 
 
    border-color: #062F4F; 
 
} 
 
/* title */ 
 
.navbar-default .navbar-brand { 
 
    color: #FFFFFF; 
 
} 
 
.navbar-default .navbar-brand:hover, 
 
.navbar-default .navbar-brand:focus { 
 
    color: #813772; 
 
} 
 
/* link */ 
 
.navbar-default .navbar-nav > li > a { 
 
    color: #FFFFFF; 
 
} 
 
.navbar-default .navbar-nav > li > a:hover, 
 
.navbar-default .navbar-nav > li > a:focus { 
 
    color: #813772; 
 
} 
 
.navbar-default .navbar-nav > .active > a, 
 
.navbar-default .navbar-nav > .active > a:hover, 
 
.navbar-default .navbar-nav > .active > a:focus { 
 
    color: #FFFFFF; 
 
    background-color: #813772; 
 
} 
 
.navbar-default .navbar-nav > .open > a, 
 
.navbar-default .navbar-nav > .open > a:hover, 
 
.navbar-default .navbar-nav > .open > a:focus { 
 
    color: #FFFFFF; 
 
    background-color: #062F4F; 
 
} 
 
/* caret */ 
 
.navbar-default .navbar-nav > .dropdown > a .caret { 
 
    border-top-color: #000000; 
 
    border-bottom-color: #000000; 
 
} 
 
.navbar-default .navbar-nav .pinkBackground>li>a { 
 
    color:#062F4F ; 
 
} 
 

 
@media (min-width: 768px) { 
 
    .navbar .navbar-nav { 
 
     display: inline-block; 
 
     float: none; 
 
     vertical-align: top; 
 

 
    } 
 

 
    .navbar .navbar-collapse { 
 
     text-align: center; 
 
    } 
 
} 
 

 
</style> 
 
<nav class="navbar navbar-default" data-spy="affix" data-offset-top="900"> 
 
    <div class="container-fluid"> 
 
    <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="Son Of The Right Hand v.0.html#postWelcome">Son of the Right Hand</a> 
 
    </div> 
 

 

 
    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1"> 
 
     <ul class="nav navbar-nav"> 
 
     <li class="active" id="home"><a href="Son Of The Right Hand v.0.html#postWelcome">Home <span class="sr-only">(current)</span></a></li> 
 
     <li><a href="#">What is tSotRH?</a></li> 
 
     <li><a href="#">About Me</a></li> 
 
     <li class="dropdown"> 
 
      <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Streams <span class="caret"></span></a> 
 
      <ul class="dropdown-menu pinkBackground"> 
 
      <li><a href="#">Stream 1</a></li> 
 
      <li><a href="#">Stream 2</a></li> 
 
      <li><a href="#">Stream 3</a></li> 
 
      </ul> 
 
     </li> 
 
     </ul> 
 

 

 
    </div> 
 
</nav>