.exchange{width:100%;min-height:100vh;display:flex;flex-direction:column}.exchange .van-card__content{padding:6px 0}.list{flex:1;padding:0 12px;padding-bottom:48px}.btn-wrap,.list{background-color:#fff}.btn-wrap{position:fixed;bottom:0;left:0;right:0;height:48px;display:flex;align-items:center;justify-content:flex-end;padding:0 16px}