This is normal body text 13 pixels FREIGHT SANS PRO 400. I used an em height of 1.7 which I think is actually leading. If you just keep typing and typing and don't use the return key then you get this kind of spacing. It's easier to read small text when it's spaced adequately. If you want the lines to be shorter you have to add a spacer to either side, or to one side to shorten the text box.