Pseudo-class transformation CHECKBOX style in CSS3

Collect the skills you see. In CSS3, you can do it, for example, the original CHECKBOX is square and becomes circular; the method is to use pseudo-classes:

//html
<input type="checkbox" class="check">
//css
.check {
  background-color: #8BC34A;
  width: 40px;
  -webkit-appearance: none;
  appearance: none;
}
.check::after {
  content: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="40" height="40" viewBox="-10 -18 100 135"><circle cx="50" cy="50" r="50" fill="none" stroke="#fff" stroke-width="3"/></svg>');
}