Would like to make some accommodations for less than desktop breakpoints (as well as can be done for an IDE). For references, here are how a couple other playgrounds do it
Solid

Svelte
Has a nice input / output toggle

A related thought; should the output container actually be an editor? Right now it is another Monaco instance, just in read-only mode. Main benefit is that it brings along all the syntax highlighting, which is really nice.
Would like to make some accommodations for less than desktop breakpoints (as well as can be done for an IDE). For references, here are how a couple other playgrounds do it
Solid

Svelte

Has a nice input / output toggle
A related thought; should the output container actually be an editor? Right now it is another Monaco instance, just in read-only mode. Main benefit is that it brings along all the syntax highlighting, which is really nice.