Minor changes to fix container issues.

Not final
Removed box-shadow and border from panel class
Merge pull request #2 from akramsharshara/master

Minor UI fixes
Fixed Grid issues on small devices
Fixed background image responsiveness
Merge pull request #3 from akramsharshara/master

Grid issues fixed for mobile and added CSS based image responsiveness
Merge branch 'master' into gh-pages

merged layout changes.