是否可以部分覆盖该元素，但使其对光标可见？

Question

在 template 中，我需要在菜单上实现叠加图像，但我想留下完全可用的菜单项，而不是部分。

现在实现了，只有按钮的上半部分可用https://arthurmiko.github.io/shadows_portfolio/

.elem {
  display: inline-block;
  width: 100px;
  height: 100px;
  background: #777;
  transition: .3s;
}

.elem:hover {
  cursor: pointer;
  background: #f77;
}

.higher-box {
  position: relative;
  margin-top: -50px;
  width: 308px;
  height: 100px;
  background: rgba(0, 0, 255, .9);
  z-index: 1;
}

<div class="lower-box">
  <a href="#"><div class="elem"></div></a>
  <a href="#"><div class="elem"></div></a>
  <a href="#"><div class="elem"></div></a>
</div>
<div class="higher-box"></div>

是否可以在蓝色块的重叠区域以某种方式让灰色块可供光标使用？

Answer 1

如果您可以删除 higher-box 的光标操作，您可以使用 .higher-box { pointer-events: none }

来完成

.elem {
  display: inline-block;
  width: 100px;
  height: 100px;
  background: #777;
  transition: .3s;
}

.elem:hover {
  cursor: pointer;
  background: #f77;
}

.higher-box {
  position: relative;
  margin-top: -50px;
  width: 308px;
  height: 100px;
  background: rgba(0, 0, 255, .9);
  z-index: 1;
  pointer-events: none;
}

<div class="lower-box">
  <a href="#"><div class="elem"></div></a>
  <a href="#"><div class="elem"></div></a>
  <a href="#"><div class="elem"></div></a>
</div>
<div class="higher-box"></div>

Answer 2

你可以使用伪元素，假设没有之前的堆叠上下文：

HTML

<div class="covered"></div>
<div class="covering"></div>

CSS

.covered{
  width: 200px; height: 200px;
  background: red;
  position: relative;
}
.covered:hover{
  background-color: green;
}

.covering{
  width: 200px; height: 200px;
  background: blue;
  position: relative;
  top: -100px;
}

.covered:before{
  content: "";
  display: block;
  position: absolute;
  z-index: 300;
  width: 100%; height: 100%;
}

http://codepen.io/anon/pen/KryBBr

是否可以部分覆盖该元素，但使其对光标可见？

Is it possible to partly cover the element, but leave it visible to the cursor?

html

css

z-index