html - 造型 Div - 在其他 div 的中间投下阴影

Question

我正在尝试创建看起来像翻转计数器但实际上并不像翻转计数器那样运行的 CSS 样式。我已经了解了总体外观和感觉，但我似乎无法让我的框阴影与显示编号重叠。

这是我目前所拥有的:

.numberwrapper {
  width: 50px;
  height: 90px;
  background-color: black;
  border-radius: 5px;
  position: relative;
  display: inline-block;
}
.shadow {
  width: 100%;
  height: 50%;
  z-index: 100;
  box-shadow: 0px 5px 4px -2px #888888;
}
.number {
  font-family: 'Tahoma', sans-serif;
  top: -90;
  color: #ffffff;
  font-size: 85px;
  line-height: 0px;
  text-align: center;
}
.bigcomma {
  font-family: 'Tahoma', sans-serif;
  font-size: 85px;
  color: black;
}

<div class="numberwrapper">
  <div class="shadow">
  </div>
  <div class="number">
    1
  </div>
</div>


<span class="bigcomma">,</span>
<div class="numberwrapper">
  <div class="shadow">
  </div>
  <div class="number">
    2
  </div>
</div>

<div class="numberwrapper">
  <div class="shadow">
  </div>
  <div class="number">
    3
  </div>
</div>

<div class="numberwrapper">
  <div class="shadow">
  </div>
  <div class="number">
    4
  </div>
</div>

就像我说的，我最大的问题是我无法让我的 .shadow div 显示在数字之上。

Answer 1

将“position: relative”添加到 .shadow 以启动 z-index:

.numberwrapper {
  width: 50px;
  height: 90px;
  background-color: black;
  border-radius: 5px;
  position: relative;
  display: inline-block;
}
.shadow {
  width: 100%;
  height: 50%;
  z-index: 100;
  box-shadow: 0px 5px 4px -2px #888888;
  position: relative;
}
.number {
  font-family: 'Tahoma', sans-serif;
  top: -90;
  color: #ffffff;
  font-size: 85px;
  line-height: 0px;
  text-align: center;
}
.bigcomma {
  font-family: 'Tahoma', sans-serif;
  font-size: 85px;
  color: black;
}

<div class="numberwrapper">
  <div class="shadow">
  </div>
  <div class="number">
    1
  </div>
</div>


<span class="bigcomma">,</span>
<div class="numberwrapper">
  <div class="shadow">
  </div>
  <div class="number">
    2
  </div>
</div>

<div class="numberwrapper">
  <div class="shadow">
  </div>
  <div class="number">
    3
  </div>
</div>

<div class="numberwrapper">
  <div class="shadow">
  </div>
  <div class="number">
    4
  </div>
</div>