1.page{
2  display: flex;
3  flex-direction: column;
4  align-items: center;
5  justify-content: center;
6}
7
8.link-iot-btn{
9  width: 200rpx;
10  height: 200rpx;
11  margin-top: 200rpx;
12  border-radius: 20rpx;
13  margin-bottom: 30rpx;
14}
15
16.link-iot-btn-img{
17  width: 180rpx;
18  height: 180rpx;
19  margin: 10rpx;
20}