input checkbox改变颜色

input[type=checkbox] {
  margin-right: 5px;
  cursor: pointer;
  font-size: 14px;
  width: 15px;
  height: 12px;
  position: relative;
}

input[type=checkbox]:after {
  position: absolute;
  width: 10px;
  height: 15px;
  top: 0;
  content: " ";
  background-color: #7B68EE;
  color: #fff;
  display: inline-block;
  visibility: visible;
  padding: 0px 3px;
  border-radius: 3px;
}

input[type=checkbox]:checked:after {
  content: "✓";
  font-size: 12px;
}