.container { background-color: #3E4349; justify-content: flex-start; } .btn { width:100%; height:390rpx; } .line{ width: 100%; height:20rpx; background-color: #1e1e1e; } .bottom{ font-size:20rpx; color:#fff; text-align: center; margin: 100rpx 0 40rpx 0; }