Jupyter-themes: Changing -cellw as a % shifts content to the right

[VimalMollyn]

I tried using dunovank's custom setting from the README

_jt -t onedork -fs 95 -altp -tfs 11 -nfs 115 -cellw 88% -T_

On debugging, it seems like the -cellw 88% is the source of the issue because changing it to -cellw 980 works as expected.

[NathanYee]

Also having this same issue. I ran a diff between the .jupyter folders of my desktop (has issue) and laptop (does not have issue) and found no differences that explain the issue.

[mawright]

I'm getting this issue too. I've been using jupyter-themes v 0.20.0 for at least a year and this issue just appeared recently, so I wonder if it was caused by some recent change in jupyter itself.

[NathanYee]

Temporarily downgraded notebook to 6.0.0 and that fixed the issue

[alexisthual]

notebook 6.1.4 reverted breaking changes, so you can re-upgrade this package!