Update styles.css

Tablet portrait intro column sizing change
Update styles.css

Removed intro column styles
Update styles.css

Shortened the icon CSS to remove redundancy
Update styles.css

Added styles for gallery and accordions
Merge branch 'patch-22' of https://github.com/Kevincredible/pier-1 into Kevincredible-patch-22
Merge branch 'Kevincredible-patch-22'