带有红色边框的空div显示为红线 - 我可以仅使用CSS隐藏它吗？

I have a div which in which errors will be represented. My problem is that because it has a red border, it will be displayed as an empty line even when the div is empty (there are no errors). I don't like this behavior; I'd prefer the div to be completely invisible when it is empty.I have a div which in which errors will be repr