📜  下划线 CSS 动画 - CSS 代码示例

📅  最后修改于: 2022-03-11 14:47:38.178000             🧑  作者: Mango

代码示例3
#sec {
  display: inline-block;
  position: relative;
  padding-bottom: 3px;
}
#sec:after {
  content: '';
  display: block;
  margin: auto;
  height: 3px;
  width: 0px;
  background: transparent;
  transition: width .5s ease, background-color .5s ease;
}
#sec:hover:after {
  width: 100%;
  background: blue;
}