Reverted all WebKit transforms. Too buggy.

Previously, the format icons were not displaying correctly on mobile,
so I used a webkit-transform to fix it. This appears to have forced
hardware rendering, but each modification caused more problems with
rendering elements, such as the logo. More modifications caused
rendering issues when trying to toggle the format bars. I am reverting
it all in order to focus on other work. I will fix the display bugs
later, possibly just by using SVG icons rather than PNG icons.
Added a missing closing body tag.