更改CSS样式BurguerMenu NavBar

Question

我有一个Bootstrap导航栏，我希望当我点击部署按钮时，此CSS（按钮）发生变化（我不喜欢CSS Button默认值）。所以...我想要下一个：

• 当我点击Menu（在Xtra Small Sizes -as movile-），它的CSS样式会改变（例如：background-color：red）。

我该怎么做？什么是他的ClassNameCss？ （例如：.navbar按钮[aria-expanded = true]）谢谢。

编辑：添加我的NavBar代码：

<nav class="navbar navbar-default" role="navigation"> 

      <div class="navbar-header"> 
       <button type="button" class="navbar-toggle navbar-collapse-left" data-toggle="collapse" data-target=".navbar-collapse"> 
        <span class="sr-only">Menú</span> 
        <span class="icon-bar"></span> 
        <span class="icon-bar"></span> 
        <span class="icon-bar"></span> 
       </button> 
       {/*<a class="navbar-brand" href="/inicio"><img id="idFotoLogotipo" width="200px" src="./assets/images/cabecera_CE.jpg"/></a>*/} 
       <a class="navbar-brand visible-xs-block" /*href="http://www.upct.es/"*/><span id="idTextoLogotipo">- INCIDENCIAS -</span></a> 
      </div> 

      <div class="collapse navbar-collapse"> 
       <ul class="nav navbar-nav navbar-left"> 
        <MenuNavItem to='/administrador/inicio' index={true} /*menuItemActive="inicio"*/>Inicio</MenuNavItem> 
        <MenuNavItem to='/administrador/nueva_incidencia' /*menuItemActive="nueva_incidencia"*/>Nueva Incidencia</MenuNavItem> 
        <MenuNavItem to='/administrador/incidencias_recibidas' /*menuItemActive="incidencias_recibidas"*/>Incidencias Recibidas</MenuNavItem> 
        <MenuNavItem to='/administrador/informes' /*menuItemActive="informes"*/>Informes</MenuNavItem> 
       </ul> 

       <ul class="nav navbar-nav navbar-right"> 
        <li class="divider visible-xs-block"></li> 
        {this.state.logged === true ? <p class="nav navbar-text hidden-xs"><span class="glyphicon glyphicon-user"></span> Bienvenido, {this.state.nombre} ({this.state.dni})</p> : ''} 
        {this.state.logged === true ? <p class="nav navbar-text visible-xs-block"><span class="glyphicon glyphicon-user"></span> Bienvenido, {this.state.nombre}</p> : ''} 
        {this.state.logged === true ? <li class="salir"><a href="http://www.upct.es/"><span class="glyphicon glyphicon-off"></span> Salir</a></li> : <li class="entrar"><a href="http://www.upct.es/"><span class="glyphicon glyphicon-user"></span> Entrar</a></li>} 
       </ul> 
      </div> 

     </nav> 

Answer 1

如果你指的是 '汉堡包菜单'（三线）这里显示的下拉切换按钮：

那么你应该能够以此为目标：

.navbar-toggle[aria-expanded="true"], 
.navbar-toggle[aria-expanded="true"]:focus { 
    background-color: red; 
} 

请注意，:focus样式是必需的，否则默认的灰色背景色将在点击按钮时显示，因为此时按钮将具有焦点。

编辑：试试这个例子 - 我已经用.navbar-default作为前缀，它应该确保样式的工作。

.navbar-default .navbar-toggle[aria-expanded="true"], 
 
.navbar-default .navbar-toggle[aria-expanded="true"]:focus { 
 
    background-color: red; 
 
} 
 

 
.navbar-default .navbar-collapse[aria-expanded="true"] { 
 
    background-color: #428bca; 
 
}

<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"/> 
 

 
<nav class="navbar navbar-default"> 
 
    <div class="container-fluid"> 
 
    <!-- 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="#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="#">Brand</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 class="active"><a href="#">Link <span class="sr-only">(current)</span></a></li> 
 
     <li><a href="#">Link</a></li> 
 
     <li class="dropdown"> 
 
      <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a> 
 
      <ul class="dropdown-menu"> 
 
      <li><a href="#">Action</a></li> 
 
      <li><a href="#">Another action</a></li> 
 
      <li><a href="#">Something else here</a></li> 
 
      <li role="separator" class="divider"></li> 
 
      <li><a href="#">Separated link</a></li> 
 
      <li role="separator" class="divider"></li> 
 
      <li><a href="#">One more separated link</a></li> 
 
      </ul> 
 
     </li> 
 
     </ul> 
 
     <form class="navbar-form navbar-left"> 
 
     <div class="form-group"> 
 
      <input type="text" class="form-control" placeholder="Search"> 
 
     </div> 
 
     <button type="submit" class="btn btn-default">Submit</button> 
 
     </form> 
 
     <ul class="nav navbar-nav navbar-right"> 
 
     <li><a href="#">Link</a></li> 
 
     <li class="dropdown"> 
 
      <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a> 
 
      <ul class="dropdown-menu"> 
 
      <li><a href="#">Action</a></li> 
 
      <li><a href="#">Another action</a></li> 
 
      <li><a href="#">Something else here</a></li> 
 
      <li role="separator" class="divider"></li> 
 
      <li><a href="#">Separated link</a></li> 
 
      </ul> 
 
     </li> 
 
     </ul> 
 
    </div><!-- /.navbar-collapse --> 
 
    </div><!-- /.container-fluid --> 
 
</nav>