Increase use of screen real-estate.

[easez88]

Is your feature request related to a problem?

Memos has a lot of wasted space on the sides.

Describe the solution you'd like

It would be great if memos has better use of its space by setting the max width to be higher for max-w-6xl and max-w-3xl to look something like this:

Additional context

I am aware that this can be accomplished with custom css, but I thought i would suggest it as a good quality of life upgrade as a whole.