Fixed next / previous page buttons

Switched to using ::after and ::before pseudo selectors to avoid any default element styling.
Fixed image and YouTube video height.

Wrapped YouTube iframe in a div and styled it as a 16:9 element so that it would better fit when the content wrap is resized.
Updated adaptive backgrounds

Updated adaptive backgrounds to the latest version. Changed the selector via the main function call in scripts.js
Added 900x450 thumbnail size for header images.
Removed Newer/Older text from pagination
Added better media queries. Fixed footer when main content area resized.

Added more media queries to better fit smaller displays. Fixed the second footer area by properly placing the copyright and changing the widget positioning with Masonry.
Added missing Masonry script