Diff of CSS/Grid

• The added line is THIS COLOR.
• The deleted line is THIS COLOR.
• Go to CSS/Grid.

- CSS Grid Layoutをガッツリ使った所感
--  http://qiita.com/clockmaker/items/2a6ba69ef6e452844adf

- CSS Grid Layout について
--  http://qiita.com/morishitter/items/738488290451555d913c