.box {
  width: 690rpx;
  background: #fff;
  border-radius: 20rpx;
  margin: auto;
  overflow: hidden;
  margin-top: 20px;
  padding: 20px 0;
}

.buttonFixed {
  position: fixed;
  bottom: env(safe-area-inset-bottom);
  margin-bottom: 30rpx;
  left: 0;
  width: 100%;
  padding: 0 30rpx;
  box-sizing: border-box;
}
