html,body { height: 100%; background-color: white; } .bg-scroll-view { height: 100%; background-color: white; } .textarea-bg { width: 700rpx; height: 500rpx; margin: 0 auto; display: flex; box-shadow: 0 12rpx 30rpx 0 rgba(0, 0, 0, 0.04); } .textarea { width: 660rpx; height: 450rpx; margin: 30rpx auto 20rpx; font-size: 32rpx; color: #222222; } .btn{ width: 710rpx; height: 90rpx; position: fixed; bottom: 0; left: 20rpx; background: #3296FB; line-height: 90rpx; text-align: center; color: #ffffff; border-radius: 45rpx; }