mozilaのnavbarブートストラップ（最終更新ブートストラップ）でフォームをスクロールできませんfirefox

Question

navbarにフォームログインを作成して開きたいのですが、mozillaブラウザを使用すると開きません。

なぜか分かりません。

クローム： enter image description here

のMozilla：
enter image description here

Answer 1

<nav class="navbar navbar-inverse navbar-fixed-top warna-navbar"> 
     <div class="container"> 
     <div class="navbar-header"> 
     <a class="navbar-brand" href="?page"> 
      <img alt="Brand" src="pic/logo.png" class="logo-ikalum"> 
     </a> 
     <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> 
    </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="#" class="hvr-sweep-to-bottom">Link</a></li>--> 
      <li class="dropdown"> 
       <a href="#" class="dropdown-toggle hvr-sweep-to-bottom" 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> 
      <li><a href="../umj"><span class="label label-warning">Web IKALUM</span></a></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">Cari</button> 
     </form> 
     <ul class="nav navbar-nav navbar-right"> 
      <li class="dropdown"> 
       <a href="#" class="dropdown-toggle hvr-sweep-to-bottom" data-toggle="dropdown" role="button" aria-expanded="false"><i class="glyphicon glyphicon-user"></i> Daftar</a> 
       <div class="dropdown-menu form-signup stop-propagation" role="menu"> 
        <div class="form-group"> 
         <label for="exampleInputEmail1"><i class="glyphicon glyphicon-envelope"></i> Email address</label> 
         <input type="email" class="form-control" id="exampleInputEmail1" placeholder="Enter email" /></div> 
        <div class="form-group"> 
         <label for="exampleInputPassword1"><i class="glyphicon glyphicon-lock"></i> Password</label> 
         <input type="password" class="form-control" id="exampleInputPassword1" placeholder="Password" /></div> 
        <button type="submit" class="btn btn-primary btn-block"><i class="glyphicon glyphicon-ok"></i> Daftar</button> 
       </div> 
      </li> 
      <li class="dropdown"> 
       <a href="#" class="dropdown-toggle hvr-sweep-to-bottom" data-toggle="dropdown" role="button" aria-expanded="false"><i class="glyphicon glyphicon-user"></i> Masuk</a> 
       <div class="dropdown-menu form-login stop-propagation" role="menu"> 
        <form action ="?page=act" method="POST"> 
         <div class="form-group"> 
          <label for="exampleInputEmail1"><i class="glyphicon glyphicon-envelope"></i> Number of Member</label> 
          <input type="text" name="numbermember" class="form-control" id="exampleInputEmail1" placeholder="Enter your member number" /></div> 
         <div class="form-group"> 
          <label for="exampleInputPassword1"><i class="glyphicon glyphicon-lock"></i> Password</label> 
          <input type="password" name="password" class="form-control" id="exampleInputPassword1" placeholder="Enter yout password" /></div> 
         <button type="submit" name="btnlogin" class="btn btn-success btn-block"><i class="glyphicon glyphicon-ok"></i> Masuk</button> 
        </form> 
       </div> 
      </li> 
     </ul> 
    </div><!-- /.navbar-collapse --> 
    </div> 
    </nav> 

私はコードではなく、すべてのコードが、問題の特定を参照してくださいすることができます私は