Full width tag in code cells is ignored?

[RemDelaporteMathurin]

This issue is a copy of https://github.com/myst-templates/book-theme/issues/5 that @agoose77 asked me to repost here

Hi! Thanks for the template!

I'd like to have a page with plotly figures but the figures are a bit small.

I tried increasing their width by adding the full-width tag to the cells but this seems to be ignored:

Is this possible?

Thanks in advance!