I just spent the past couple nights completing the challenge. I decided to add in some additional features like background color changes just to see if I could. (Thank goodness for JQuery). I probably did a horrible job with CSS and Bootstrap though. Let me know what I could’ve done better and I will get around to updating it soon.
http://codepen.io/lmckee/full/RGRvNJ/[details=Summary]This text will be hidden[/details]