<input type=checkbox role=switch>
<input type=checkbox role=switch checked>
<input type=checkbox role=switch disabled>
<input type=checkbox role=switch disabled checked>
[type=checkbox][role=switch] {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background: radial-gradient(
    circle at var(--position) 50%,
    white 15%,
    var(--border) 16%,
    var(--color) 19%);
/* pimpin' start here */
  --position: 20%;
  --color: #DDD;
  --border: #888;
  width: 3em;
  height: 1.5em;
  border-radius: 1.5em;
  box-shadow: 0 .1em .2em black inset;
}
[type=checkbox][role=switch]:checked {
  --position: 80%;
  --color: #4D0;/* or #48F in japan */
}
[type=checkbox][role=switch]:disabled{
  opacity: .4;
}

External CSS

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External JavaScript

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