Board Thread:Support Requests - Getting Technical/@comment-27111026-20150108115303

So, I have a infobox like this. I want to ask how can I do the auto hide for the and  rows (they'll just only appear if their fields are filled in). I have read Rappy 4187's guide, but the first way doesn't seem to work, and I don't understand the second way. Can someone please help out? Thank you very much! 