vant-weapp/dist/popup/index.wxss

.van-popup{top:50%;left:50%;z-index:11;position:fixed;max-height:100%;overflow-y:auto;box-sizing:border-box;background-color:#fff;-webkit-overflow-scrolling:touch;-webkit-animation:ease both;animation:ease both}.van-popup--center{-webkit-transform:translate3d(-50%,-50%,0);transform:translate3d(-50%,-50%,0)}.van-popup--top{width:100%;top:0;right:auto;bottom:auto;left:50%}.van-popup--right{top:50%;right:0;bottom:auto;left:auto}.van-popup--bottom{width:100%;top:auto;bottom:0;right:auto;left:50%}.van-popup--left{top:50%;right:auto;bottom:auto;left:0}@-webkit-keyframes van-center-enter{from{opacity:0}to{opacity:1}}@keyframes van-center-enter{from{opacity:0}to{opacity:1}}@-webkit-keyframes van-center-leave{from{opacity:1}to{opacity:0}}@keyframes van-center-leave{from{opacity:1}to{opacity:0}}@-webkit-keyframes van-bottom-enter{from{-webkit-transform:translate3d(-50%,100%,0);transform:translate3d(-50%,100%,0)}to{-webkit-transform:translate3d(-50%,0,0);transform:translate3d(-50%,0,0)}}@keyframes van-bottom-enter{from{-webkit-transform:translate3d(-50%,100%,0);transform:translate3d(-50%,100%,0)}to{-webkit-transform:translate3d(-50%,0,0);transform:translate3d(-50%,0,0)}}@-webkit-keyframes van-bottom-leave{from{-webkit-transform:translate3d(-50%,0,0);transform:translate3d(-50%,0,0)}to{-webkit-transform:translate3d(-50%,100%,0);transform:translate3d(-50%,100%,0)}}@keyframes van-bottom-leave{from{-webkit-transform:translate3d(-50%,0,0);transform:translate3d(-50%,0,0)}to{-webkit-transform:translate3d(-50%,100%,0);transform:translate3d(-50%,100%,0)}}@-webkit-keyframes van-top-enter{from{-webkit-transform:translate3d(-50%,-100%,0);transform:translate3d(-50%,-100%,0)}to{-webkit-transform:translate3d(-50%,0,0);transform:translate3d(-50%,0,0)}}@keyframes van-top-enter{from{-webkit-transform:translate3d(-50%,-100%,0);transform:translate3d(-50%,-100%,0)}to{-webkit-transform:translate3d(-50%,0,0);transform:translate3d(-50%,0,0)}}@-webkit-keyframes van-top-leave{from{-webkit-transform:translate3d(-50%,0,0);transform:translate3d(-50%,0,0)}to{-webkit-transform:translate3d(-50%,-100%,0);transform:translate3d(-50%,-100%,0)}}@keyframes van-top-leave{from{-webkit-transform:translate3d(-50%,0,0);transform:translate3d(-50%,0,0)}to{-webkit-transform:translate3d(-50%,-100%,0);transform:translate3d(-50%,-100%,0)}}@-webkit-keyframes van-left-enter{from{-webkit-transform:translate3d(-100%,-50%,0);transform:translate3d(-100%,-50%,0)}to{-webkit-transform:translate3d(0,-50%,0);transform:translate3d(0,-50%,0)}}@keyframes van-left-enter{from{-webkit-transform:translate3d(-100%,-50%,0);transform:translate3d(-100%,-50%,0)}to{-webkit-transform:translate3d(0,-50%,0);transform:translate3d(0,-50%,0)}}@-webkit-keyframes van-left-leave{from{-webkit-transform:translate3d(0,-50%,0);transform:translate3d(0,-50%,0)}to{-webkit-transform:translate3d(-100%,-50%,0);transform:translate3d(-100%,-50%,0)}}@keyframes van-left-leave{from{-webkit-transform:translate3d(0,-50%,0);transform:translate3d(0,-50%,0)}to{-webkit-transform:translate3d(-100%,-50%,0);transform:translate3d(-100%,-50%,0)}}@-webkit-keyframes van-right-enter{from{-webkit-transform:translate3d(100%,-50%,0);transform:translate3d(100%,-50%,0)}to{-webkit-transform:translate3d(0,-50%,0);transform:translate3d(0,-50%,0)}}@keyframes van-right-enter{from{-webkit-transform:translate3d(100%,-50%,0);transform:translate3d(100%,-50%,0)}to{-webkit-transform:translate3d(0,-50%,0);transform:translate3d(0,-50%,0)}}@-webkit-keyframes van-right-leave{from{-webkit-transform:translate3d(0,-50%,0);transform:translate3d(0,-50%,0)}to{-webkit-transform:translate3d(100%,-50%,0);transform:translate3d(100%,-50%,0)}}@keyframes van-right-leave{from{-webkit-transform:translate3d(0,-50%,0);transform:translate3d(0,-50%,0)}to{-webkit-transform:translate3d(100%,-50%,0);transform:translate3d(100%,-50%,0)}}