vant-weapp/dist/switch/index.wxss

.zan-switch{position:relative;display:inline-block;width:52px;height:32px;vertical-align:middle;box-sizing:border-box;border-radius:16px;background:#44db5e;border:1px solid #44db5e}.zan-switch__circle{position:absolute;top:0;left:0;width:30px;height:30px;display:inline-block;background:#fff;border-radius:15px;box-sizing:border-box;box-shadow:0 0 0 1px rgba(0,0,0,.1),0 3px 1px 0 rgba(0,0,0,.05),0 2px 2px 0 rgba(0,0,0,.1),0 3px 3px 0 rgba(0,0,0,.05);-webkit-transition:-webkit-transform .35s cubic-bezier(.45,1,.4,1);transition:-webkit-transform .35s cubic-bezier(.45,1,.4,1);transition:transform .35s cubic-bezier(.45,1,.4,1);transition:transform .35s cubic-bezier(.45,1,.4,1),-webkit-transform .35s cubic-bezier(.45,1,.4,1);z-index:2}.zan-switch__bg{position:absolute;top:-1px;left:-1px;width:52px;height:32px;background:#fff;border-radius:26px;display:inline-block;border:1px solid #e5e5e5;box-sizing:border-box;-webkit-transition:-webkit-transform .35s cubic-bezier(.45,1,.4,1);transition:-webkit-transform .35s cubic-bezier(.45,1,.4,1);transition:transform .35s cubic-bezier(.45,1,.4,1);transition:transform .35s cubic-bezier(.45,1,.4,1),-webkit-transform .35s cubic-bezier(.45,1,.4,1);-webkit-transform:scale(0);transform:scale(0);-webkit-transform-origin:36px 16px;transform-origin:36px 16px}.zan-switch--on .zan-switch__circle{-webkit-transform:translateX(20px);transform:translateX(20px)}.zan-switch--off .zan-switch__bg{-webkit-transform:scale(1);transform:scale(1)}.zan-swtich--disabled{opacity:.4}.zan-switch__loading{position:absolute;left:7px;top:7px;width:16px;height:16px;background:url(https://img.yzcdn.cn/public_files/2017/02/24/9acec77d91106cd15b8107c4633d9155.png) no-repeat;background-size:16px 16px;-webkit-animation:zan-switch-loading .8s infinite linear;animation:zan-switch-loading .8s infinite linear}@-webkit-keyframes zan-switch-loading{from{-webkit-transform:rotate(0);transform:rotate(0)}to{-webkit-transform:rotate(360deg);transform:rotate(360deg)}}@keyframes zan-switch-loading{from{-webkit-transform:rotate(0);transform:rotate(0)}to{-webkit-transform:rotate(360deg);transform:rotate(360deg)}}