Squashed 'vendor/dead-simple-grid/' content from commit 9ad15f7

git-subtree-dir: vendor/dead-simple-grid
git-subtree-split: 9ad15f74280d720db77bc84ffd5bf865ebce3aae
Merge commit '3d4dea738eb70de2370afd087c96cb4cb2083098' as 'vendor/dead-simple-grid'
Adds some styling.