<label class="radikalwp-sw-std"><input type="checkbox" checked /><span><//span><//label>

.radikalwp-sw-std input { display: none; }
.radikalwp-sw-std span {
  display: block;
  width: 52px;
  height: 28px;
  padding: 3px;
  background: #cbd5e1;
  border-radius: 999px;
  cursor: pointer;
  transition: background .3s ease;
  box-sizing: border-box;
  position: relative;
}
.radikalwp-sw-std span::before {
  content: '';
  position: absolute;
  top: 3px;
  right: 3px;
  width: 22px;
  height: 22px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 2px 6px rgba(15, 23, 42, .25);
  transition: transform .3s cubic-bezier(.4, 1.4, .6, 1);
}
.radikalwp-sw-std input:checked + span { background: #34c759; }
.radikalwp-sw-std input:checked + span::before { transform: translateX(-24px); }