🧱 Simplify Blocks (remove grid-system)

[rowanc1]

Fixes jupyter-book/mystmd#1886

[changeset-bot]

🦋 Changeset detected

Latest commit: 2b19f0a

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 14 packages

Name	Type
myst-to-react	Patch
@myst-theme/jupyter	Patch
@myst-theme/providers	Patch
@myst-theme/frontmatter	Patch
@myst-theme/diagrams	Patch
@myst-theme/site	Patch
@myst-theme/styles	Patch
@myst-theme/common	Patch
@myst-theme/icons	Patch
@myst-theme/search	Patch
@myst-theme/search-minisearch	Patch
@myst-theme/book	Patch
@myst-theme/article	Patch
myst-demo	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[agoose77]

@rowanc1 I don't think this change is friendly to future outputs work or #540:

Elements like aside need the CSS grid to position themselves correctly. This is only possible if they are top-level elements within a grid, or their parents use subgrid. Previously, we ensured that the outermost block created a subgrid.

This PR drops the subgrid feature by only wrapping the block children in a node if they have a class or an identifier. That fixes the https://cpraveen.github.io/numa/stiff1 example, but has the following shortcoming: Both code-outputs that generate e.g. an aside and blocks that use #540 will set an identifier and/or class, but want to preserve the grid system.

I think instead we probably need to retain the grid e.g. #547.