html - 如何使用伪元素将图标添加到 div - CSS

Question

我想在 div 容器之前添加一个图标作为连接器:像这样:

这就是我所拥有的 ( https://jsfiddle.net/kmcursf6/ )。

.parent {
  border-left: 1px solid #ff0000;
}

.child {
  position: relative;
  margin-left: 20px;
  background: #e9e9e9;
  margin-bottom: 10px;
  padding: 10px;
}

.child::before {
  position: absolute;
  content: '';
  left: -20px;
  top: 50%;
  border-top: 1px solid #ff0000;
  width: 20px;
}

.child:last-child::after {
  position: absolute;
  content: '';
  left: -21px;
  top: calc(50% + 1px);
  bottom: 0;
  border-left: 1px solid #FFFFFF;
}

<div class="parent">
  <div class="child">
    Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat
  </div>
  <div class="child">
    Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat
  </div>
  <div class="child">
    click to add more
  </div>
</div>

我试过这个来添加那个图标:

.child::before {
  position: absolute;
  content: '';
  left: -20px;
  top: 50%;
  width: 20px;
  transform: rotate(90deg);
  border-radius: 20px;
}

但它不起作用，它完全抛弃了我所拥有的。知道如何到达那里吗？

Answer 1

.child::after {
  position: absolute;
  content: '';
  left: -10px;
  top: 50%;
  margin-top: -10px;
  width: 20px;
  height: 20px;
  background: #000;
  border-radius: 90%;
  clip-path: polygon(50% 0, 50% 100%, 0 100%, 0 0);
}

https://jsfiddle.net/r5z0av87/1/