.BtnFooter{ position: fixed; bottom: 0; height: 172rpx; width: 100%; background-color: white; .btn{ width: 404rpx; height: 88rpx; background: #CCCCCC; border-radius: 44rpx; color: white; font-size: 30rpx; text-align: center; line-height: 88rpx; margin: 24rpx auto 0; } .btn.active{ background-color:#E84134 ; } }