css定义checkbox复选框背景颜色和选中样式

利用css中的伪类属性before和after改变checkbox复选框默认背景颜色和选中样式。

改变checkbox复选框默认背景颜色

input[type=checkbox] {
  cursor: pointer;
  position: relative;
}

input[type=checkbox]::after {
  position: absolute;
  top: 0;
  background-color: #fff;
  color: #fff;
  width: 14px;
  height: 14px;
  display: inline-block;
  visibility: visible;
  padding-left: 0px;
  text-align: center;
  content: ' ';
  border-radius: 2px;
  box-sizing: border-box;
  border: 1px solid #ddd;
}

改变checkbox复选框选中颜色

input[type=checkbox]:checked::after {
  content: "";
  background-color: #FF7D00;
  border-color: #FF7D00;
  background-color: #FF7D00;
}

input[type=checkbox]:checked::before {
  content: '';
  position: absolute;
  top: 1px;
  left: 5px;
  width: 3px;
  height: 8px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  z-index: 1;
}