Toggle SG and project navigation bar visibility

Not sure if this has been asked before (or maybe is doable already?)  but it would be very nice to be able to quickly toggle the navigation bars on/off as they take a lot a screen estate.

On smaller laptop screen, with the browser nav bars, tabs and menu plus the SG nav bar, project Nav bar and page title bar, sometimes the content itself we need to work on only take 2/3 of the screen or even less.

The action/search/filter bar should probably stay there all the time.