Positioning, reorder, transparent bg?

Hi, thanks for this plugin – nice, simple and works!

Wondering if I can, with css:

Position on bottom of screen?

Reorder the icons?

Remove the background and simply have the white icon? How it appears here works fine: https://i.imgur.com/5mpvN0Q.png , wanting to avoid: https://i.imgur.com/GI9jDUV.png

Thanks!

Morgan