.toggle {
  width: 40px;
  height: 22px;
  border-radius: 99px;
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
  transition: background 0.2s;
}

.toggle-k {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  position: absolute;
  top: 3px;
  transition: left 0.2s;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}