ColorUI/pages/border/border.wxss

.doc-main {
  background: transparent;
}
page{
  background: #f5f5f5;
}
.doc-box-sub {
  background: #fff;
  border-radius: 0;
}

.doc-box-sub.shadow, .doc-box-sub.shadow-lg,.shadow-alice {
  border-radius: 6rpx;
}