Random Quote Machine - Feedback pretty please with sugar on top

Well, it works, in Firefox and Chrome, and in Codepen, as far as I can tell, but I’m not very confident that I’ve done it the “right” way. Please feel free to challenge me to include an API or two, or code in a more elegant, efficient, realistic way that would be acceptable in a real situation. I just feel like I sorta duct-taped this together and forced it to work. And it took me a ridiculously long time to do it. :-\