Hi Chipp, there are a few changes like there's a new class for controlling the borders of flyout menus rather than that coming from a bitmap image, and flexbox layouts are now done using the newer style standardized flexbox instead of the deprecated webkit-specific flexbox. So some css property names for flexbox properties are different.

Most of it is the same, there's like 50 lines different out of 1000. I've attached the CSS files here if you want to diff them to see the differences.

- Michael