在段落旁边绘制圆形线的最简单方法是什么？

Question

我希望在文本旁边有一条垂直线.我可以使用'border-left'在左边画一条垂直线,但我还没有找到如何围绕它的角落.下图显示了它应该如何:

Answer 1

使用绝对定位的伪元素来实现相同的目的.在下面的示例中,我使用的::before是绝对定位并设置为父级的完整高度(使用top: 0; bottom: 0;技巧).然后,您可以简单地设置宽度并使用border-radius宽度的一半来实现圆角.

p {
  position: relative; /* Required so that pseudo-element is positioned correctly */
  padding-left: 30px; /* Dummy value to make space for pseudo-element */
}

p::before {
  /* Create pseudo-element and give it content */
  content: '';
  display: block;
  
  /* Position it in its parent so that it is:
   * - to the left
   * - occupies full height
   */
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  
  /* Give it a fixed width and rounded corners */
  width: 10px;
  border-radius: 5px;
  
  /* Appearance */
  background-color: steelblue;
}

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