使用:: before

Question

我正在尝试通过使用伪指令创建类似的东西：

但是不确定我目前采用的方法是否是解决此问题的最佳方法？

.divider{
  display: flex;
  flex-direction: column;
}
.line1::before{
  content: '';
  /*position: absolute;*/
  display: block;
  width: 4em;
  height: .2em;
  background: red;
  transform: rotate(90deg);
}
.circle::before{
   content: '';
   display: inline-block;
   width: 15px;
   height: 15px;
   -moz-border-radius: 7.5px;
   -webkit-border-radius: 7.5px;
   border-radius: 7.5px;
   background-color: red;
}

<div class="divider">
  <div class="line1"></div>
  <div class="circle"></div>
  <div class="line2"></div>
</div>

您会使用伪元素创建类似的东西吗？如果是这样，如何使它看起来像图像中的那个？

Answer 1

这很简单，只需将元素放置在垂直和水平中间即可。

.wrapper {
  width: 100px;
  height: 200px;
  background-color: rgba(30, 50, 80, .3);
  position: relative;
}

.wrapper div {
  border-radius: 50%;
  background-color: blue;
  position: absolute;
  top: 50%;
  margin-top: -25px;
  left: 50%;
  margin-left: -25px;
  width: 50px;
  height: 50px;
  background: center center no-repeat url(https://static.thenounproject.com/png/19279-200.png) blue;
  background-size: 30px;
}

.wrapper:before,
.wrapper:after {
  content: '';
  display: block;
  width: 2px;
  height: 60px;
  background: blue;
  position: absolute;
  left: 49px;
}

.wrapper:before {
  top: 0;
}

.wrapper:after {
  bottom: 0;
}

<div class="wrapper"><div></div></div>

Answer 2

您也可以仅使用一个元素来完成此操作：

.box {
  width:40px;
  height:40px;
  border-top:40px solid transparent; /* The length of the top line */
  border-bottom:40px solid transparent; /* The length of the bottom line */
  padding:10px 0; /* Control distance between line and circle*/
  /* The lines */
  border-image:linear-gradient(to right,
    transparent calc(50% - 2px),
    red calc(50% - 2px) calc(50% + 2px),
    transparent calc(50% + 2px)) 1;
  /* The circle */
  background:radial-gradient(farthest-side,red 95%,transparent 100%) content-box;
}

<div class="box"></div>

您可以在其中轻松添加另一张图片

.box {
  width:40px;
  height:40px;
  border-top:40px solid transparent; /* The length of the top line */
  border-bottom:40px solid transparent; /* The length of the bottom line */
  padding:10px 0; /* Control distance between line and circle*/
  /* The lines */
  border-image:linear-gradient(to right,
    transparent calc(50% - 2px),
    red calc(50% - 2px) calc(50% + 2px),
    transparent calc(50% + 2px)) 1;
  /* The circle */
  background:
    url(https://static.thenounproject.com/png/19279-200.png) center/30px no-repeat,
    radial-gradient(farthest-side,red 95%,transparent 100%) content-box;
}

<div class="box"></div>