flexbox/bem#158

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poindextress wants to merge 4 commits intobloominstituteoftechnology:masterfrom

poindextress:bem

Commits on Jan 22, 2018

adding solution just using block elements
poindextress
committed

Commits on Jan 23, 2018

tweaked box model solution for practice
poindextress
committed

Commits on Jan 24, 2018