Merge pull request #1 from cpkenn09y/mvp

Mvp
fixed missing semicolons on css
give open squares an inset border

* gives the appearance that they are pressed in
Merge pull request #2 from cpkenn09y/mvp

made open squares have inset border
Merge branch 'master' of https://github.com/cpkenn09y/MinesweeperJavascript into gh-pages