折叠按钮4

Question

我创建使用引导4导航栏，并形成如下改变

1. 设置在右侧
2. 折叠按钮接过塌陷区，使外面的名优产品其在左边总是有

下面是详细代码

<nav class="navbar navbar-dark bg-danger"> 
    <a class="navbar-brand" href="#">Navbar</a> 
    <button class="navbar-toggler hidden-lg-up float-xs-right" type="button" data-toggle="collapse" data-target="#navbarResponsive" aria-controls="navbarResponsive" aria-expanded="false" aria-label="Toggle navigation"></button> 
    <div class="collapse navbar-toggleable-md" id="navbarResponsive">   
     <ul class="nav navbar-nav float-md-right"> 
      <li class="nav-item active"> 
       <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a> 
      </li> 
      <li class="nav-item"> 
       <a class="nav-link" href="#">Link</a> 
      </li> 
      <li class="nav-item"> 
       <a class="nav-link" href="#">Link</a> 
      </li> 
      <li class="nav-item dropdown"> 
       <a class="nav-link dropdown-toggle" href="http://example.com" id="responsiveNavbarDropdown" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a> 
       <div class="dropdown-menu" aria-labelledby="responsiveNavbarDropdown"> 
        <a class="dropdown-item" href="#">Action</a> 
        <a class="dropdown-item" href="#">Another action</a> 
        <a class="dropdown-item" href="#">Something else here</a> 
       </div> 
      </li> 
     </ul>   
    </div> 
</nav> 

我在点击汉堡图标时遇到问题，因为它没有正确显示我的折叠菜单。

我不知道我在哪里犯错。

这里是Pen

Answer 1

你有包裹按钮，然后在一个div标题和它把class="clearfix-xs"。这样

<div class="clearfix-xs"> 
    <a class="navbar-brand" href="#">Navbar</a> 
    <button class="navbar-toggler hidden-lg-up float-xs-right" type="button" data-toggle="collapse" data-target="#navbarResponsive" aria-controls="navbarResponsive" aria-expanded="false" aria-label="Toggle navigation"> 
    </button> 
</div> 

和CSS这是CLSS：

@media(max-width:768px){.clearfix-xs:after { 
    visibility: hidden; 
    display: block; 
    font-size: 0; 
    content: " "; 
    clear: both; 
    height: 0; 
    } 
} 

这里有一个pen