伪元素扩展了主要元素。我可以为主要元素的背景设置动画吗？

Question

有没有办法使用transition为背景设置动画？

不幸的是，transition到a元素并不起作用。

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.gf-lbtn {
  background-color: #fdce03;
  color: #ffffff;
  font-size: 16px;
  font-size: 1rem;
  padding: 16px;
  padding: 1rem;
  &:hover {
    color: #ffffff;
    text-decoration: none;
  }
}

.gf-lbtn-icon-animated {
  position: relative;
  transition: all 0.2s;
}
.gf-lbtn-icon-animated:after {
    content: '\f178';
    font-family: FontAwesome;
    margin-left: 16px;
    margin-left: 1rem;
    position: absolute;
    right: 16px;
    right: 1rem;
    transition: all 0.2s;
    }
.gf-lbtn-icon-animated:hover:after {
    position: relative;
    right: 0px;
    right: 0rem;
  }

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<a class="gf-lbtn gf-lbtn-icon-animated" href="#" target="_self" role="button">Hover Me</a>

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