通过叠加背景可以看到Bootstrap活动选项卡

Question

我正在使用Bootstrap和Bootstrap选项卡。我正在淡化自定义叠加背景，出于某种原因，活动标签在转换过程中会穿过背景。我无法解决这个问题。

jsfiddle

HTML

<div id="container" style="display:none;">
  <div id="bg">
  </div>
</div>

<div>

  <!-- Nav tabs -->
  <ul class="nav nav-tabs" role="tablist">
    <li role="presentation" class="active"><a href="#home" aria-controls="home" role="tab" data-toggle="tab">Home</a></li>
    <li role="presentation"><a href="#profile" aria-controls="profile" role="tab" data-toggle="tab">Profile</a></li>
    <li role="presentation"><a href="#messages" aria-controls="messages" role="tab" data-toggle="tab">Messages</a></li>
    <li role="presentation"><a href="#settings" aria-controls="settings" role="tab" data-toggle="tab">Settings</a></li>
  </ul>

  <!-- Tab panes -->
  <div class="tab-content">
    <div role="tabpanel" class="tab-pane active" id="home">...</div>
    <div role="tabpanel" class="tab-pane" id="profile">...</div>
    <div role="tabpanel" class="tab-pane" id="messages">...</div>
    <div role="tabpanel" class="tab-pane" id="settings">...</div>
  </div>

</div>

CSS

#bg {
  background: rgba(0, 0, 0, 0.50);
  bottom: 0;
  left: 0;
  right: 0;
  top: 0;
  position: fixed;
  z-index: 2000;
}

* {
  transition: all 250ms;
}

JS

$('#container').fadeIn();

Answer 1

更改

#bg {z-index: 2000;}

到

#bg {z-index: 0;}

OR

.nav-tabs>li {
z-index: 2001;
}