[Challenge 1] (http://codepen.io/tlgreg86/pen/egVvde)
[Challenge 2] (http://codepen.io/tlgreg86/pen/vgdxyw)
[Challenge 3] (http://codepen.io/tlgreg86/pen/EZQmPz)
[Challenge 4] (http://codepen.io/tlgreg86/pen/ggvqXR)
[Challenge 5] (http://codepen.io/tlgreg86/pen/ygvwBW)