Update CSS#18

Merged

LizabethPetersen merged 2 commits intomasterfrom

Dec 20, 2017

Commits on Dec 20, 2017

adds background image and overlay box for content
LizabethPetersen
committed
Merge branch 'css' of https://github.com/code301-nitrogen/client into css
LizabethPetersen
committed