切换开关(HTML + CSS)工作/不工作

<label class="switch">
  <input type="checkbox">
  <span class="slider round"></span>
</label>

.switch {
  position: relative;
  display: inline-block;
  width: 60px;
  height: 34px;
}

.switch input[type="checkbox"] {
  display: none;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  transition: .4s;
}

.slider:before {
  position: absolute;
  content: "";
  height: 26px;
  width: 26px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: .4s;
}

input[type="checkbox"]:checked + .slider {
  background-color: #2196F3;
}

input[type="checkbox"]:checked + .slider:before {
  transform: translateX(26px);
}