movable-view {
  display: -webkit-box;
  display: -webkit-flex;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
          align-items: center;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
          justify-content: center;
  height: 150rpx;
  width: 150rpx;
  background-color: #007aff;
  color: #fff;
}
movable-area {
  height: 300rpx;
  width: 100%;
  background-color: #d8d8d8;
  overflow: hidden;
}
.max {
  width: 500rpx;
  height: 500rpx;
}