带：before和：after边框的CSS点

Question

我想要获得的效果与链接中的效果完全相同。问题是我做的方式并不完美。当我放大站点（按Ctrl +滚动）时，内容看起来不居中。最好的解决方案是使用CSS：before和：after，我想保持这种方式。

https://jsfiddle.net/4a9c3p5q/3/

div {
  width: 120px;
  height: 50px;
  position: relative;
}

div::before {
  content: "";
  height: 100%;
  width: 2px;
  position: absolute;
  right: 10px;
  background: red;
}

div::after {
  content: "\00B7";
  color: red;
  background: white;
  position: absolute;
  top: 0;
  right: 2px;
  font-size: 70px;
  padding: 2px;
  border: 2px solid red;
  border-radius: 50%;
  width: 10px;
  height: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

<div>Sample text.</div>
<div>Sample text.</div>
<div>Sample text.</div>
<div>Sample text.</div>

Answer 1

您可以将circle元素设置为inline-block，以便轻松将其与文本垂直对齐：

div.timeline >div {
  width: 120px;
  padding-bottom:35px;
  position: relative;
  /*to replace the line*/
  background:
    linear-gradient(red,red) right 9px top 19px/2px 100% no-repeat;
  margin-bottom:-2px;
}


div.timeline > div::after {
  content: "";
  display:inline-block;
  margin-left:20px;
  vertical-align:middle;
  color: red;
  /*to replace the circle*/
  background:red content-box;
  padding: 4px;
  border: 2px solid red;
  border-radius: 50%;
  width: 8px;
  height: 8px;
}

<div class="timeline">
  <div>Sample text.</div>
  <div>Sample text.</div>
  <div>Sample text.</div>
  <div>Sample text.</div>
</div>

Answer 2

我认为问题不在于代码。因为当我扩大站点时我没有任何问题。您也可以使用em或rm代替px。