bg img, #pageFooter, padding, float clear, center

for landing page css: changed path to bg img for carousel, added width
styles for #pageFooter, removed min-height and added padding-bottom,
added :after to .centerModule to clear floats, aligned the bottom module
h3's to center.

individuals css: removed commented styles, added transitions to hover,
fixed page collection nav styles.

last update: moved styles up a media query width so the tablet version
shows instead of desktop