css实现的错号图标（3）

<div class="close icon"></div>

.close.icon {
  color: #000;
  position: absolute;
  margin-top: 0;
  margin-left: 0;
  width: 21px;
  height: 21px;}.close.icon:before {
  content: '';
  position: absolute;
  top: 10px;
  width: 21px;
  height: 1px;
  background-color: currentColor;
  -webkit-transform: rotate(-45deg);
          transform: rotate(-45deg);
}
.close.icon:after {
  content: '';
  position: absolute;
  top: 10px;
  width: 21px;
  height: 1px;
  background-color: currentColor;
  -webkit-transform: rotate(45deg);
          transform: rotate(45deg);
}