<label><input class="mui-switch" type="checkbox"> 默认未选中</label>

<label><input class="mui-switch" type="checkbox" checked> 默认选中</label>

<label><input class="mui-switch mui-switch-animbg" type="checkbox"> 默认未选中,简单的背景过渡效果,加mui-switch-animbg类即可</label>

<label><input class="mui-switch mui-switch-animbg" type="checkbox" checked> 默认选中</label>

<label><input class="mui-switch mui-switch-anim" type="checkbox"> 默认未选中，过渡效果，加 mui-switch-anim

类即可</label>

<label><input class="mui-switch mui-switch-anim" type="checkbox" checked> 默认选中</label>

.mui-switch {

  width: 52px;

  height: 31px;

  position: relative;

  border: 1px solid #dfdfdf;

  background-color: #fdfdfd;

  box-shadow: #dfdfdf 0 0 0 0 inset;

  border-radius: 20px;

  border-top-left-radius: 20px;

  border-top-right-radius: 20px;

  border-bottom-left-radius: 20px;

  border-bottom-right-radius: 20px;

  background-clip: content-box;

  display: inline-block;

  -webkit-appearance: none;

  user-select: none;

  outline: none; }

  .mui-switch:before {

    content: '';

    width: 29px;

    height: 29px;

    position: absolute;

    top: 0px;

    left:;

    border-radius: 20px;

    border-top-left-radius: 20px;

    border-top-right-radius: 20px;

    border-bottom-left-radius: 20px;

    border-bottom-right-radius: 20px;

    background-color: #fff;

    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4); }

  .mui-switch:checked {

    border-color: #64bd63;

    box-shadow: #64bd63 0 0 0 16px inset;

    background-color: #64bd63; }

    .mui-switch:checked:before {

      left: 21px; }

  .mui-switch.mui-switch-animbg {

    transition: background-color ease 0.4s; }

    .mui-switch.mui-switch-animbg:before {

      transition: left 0.3s; }

    .mui-switch.mui-switch-animbg:checked {

      box-shadow: #dfdfdf 0 0 0 0 inset;

      background-color: #64bd63;

      transition: border-color 0.4s, background-color ease 0.4s; }

      .mui-switch.mui-switch-animbg:checked:before {

        transition: left 0.3s; }

  .mui-switch.mui-switch-anim {

    transition: border cubic-bezier(0, 0, 0, 1) 0.4s, box-shadow cubic-bezier(0, 0, 0, 1) 0.4s; }

    .mui-switch.mui-switch-anim:before {

      transition: left 0.3s; }

    .mui-switch.mui-switch-anim:checked {

      box-shadow: #64bd63 0 0 0 16px inset;

      background-color: #64bd63;

      transition: border ease 0.4s, box-shadow ease 0.4s, background-color ease 1.2s; }

      .mui-switch.mui-switch-anim:checked:before {

        transition: left 0.3s; }