/**app.wxss**/
// .container {
//   height: 100%;
//   display: flex;
//   flex-direction: column;
//   align-items: center;
//   justify-content: space-between;
//   padding: 200rpx 0;
//   box-sizing: border-box;
// } 
page {
  max-height: 100vh;
  padding-bottom: constant(safe-area-inset-bottom); //constant在iOS<11.2的版本中生效
  padding-bottom: env(safe-area-inset-bottom); //env在iOS>=11.2的版本中生效
  box-sizing: border-box;
}