lvdao_v4/miniprogram/app.less

page{
  background-image: url('https://culture.4dage.com/lvDao_v4/images/bg@2x.jpg');
  background-size: cover;
  width: 100%;
  height: 100%;
  overflow: hidden;
  .container{
    width: 100%;
    height: 100%;
  }
}