Tweaked styling for navigation bar. It's now fancy responsive and adapts to very small screen sizes.
Adjusted content container to not grow over 700px. Fixed overflow on mobile devices to fit their exact screen-size without horizontal scrolling.
Added favicons for almost every device out there.
Adjusted font size and promoted video height for small screens.
Fixed margin inconsistencies with h1 tags.
Moved video, audio and download into a tabbed pane, because they are different representations of the same content.