Fixed the XFCE panel, add opacity, round edges, floating with full screen snap working.
Styling of the panel is annoying, I couldn’t change the shadow and margin with css. To get floating snap working, I added a second invisible panel that is sticking to the edge, and full screen windows snap to the invisible panel.
The rounded edges only work on a dark background, if panel shadow is active, else there will be a square shadow at the ends.
