Custom checkbox

by Vladimir

HTML

<label>
<input type="checkbox" />
</label>

CSS

label {
  width:20px;
  height: 20px;
  border: 1px solid blue;
  display: block;
  overflow: hidden;
  position: relative;
}
input[type=checkbox]:after {
  background: red;
  content: '';
     position: absolute;
    top: 0;
    left: 20px;
    width: 20px;
    height: 20px;
}
input[type=checkbox]:checked:after {
  background: blue;
}
input[type=checkbox] {
  left: -20px;
    display: block;
    position: relative;
    top: 0;
    padding: 0;
    margin: 0;
}