more ui/ux in mermaid-js live editor?

[ghost]

Hi.

"I would like to help this project through the ui/ux, design, frontend part. One thing I noticed is that there is a lot of information in the sidebar, that could be solved with this idea here."

I recently saw an old open thread here more ui/ux in mermaid-js live editor #4040 and thought I'd help out.

before

vs

after

What do you all think of this idea?