Snackbar showing 2px at bottom of screen onLoad

[Jscherbe]

Expected behavior

The snackbar should be hidden after page load but we see 2 pixels at the bottom left of the screen. This is being caused by sites with a default of box-sizing: content-box. Adding:
box-sizing: border-box; seems to fix the issue since the border is added to the rendered height.

Reproduction steps

Load the high chart editor on a page that's default box-sizing: content-box. Go to the bottom left portion of the body

Editor version

v0.2.1-rc2

Affected browser(s)

All