Under setting - Four button for deskop breakpoint:

small | regular (like today) | large | expand/fluid (No limit container width but still want horizontal padding)

Why?

This is very handy. Of course its very easy to create custom .my-container (or override the core styles) but this is not DRY!! approach. 

Real CSS frameworks with container size-modifier:

• uikit: https://getuikit.com/docs/container#size-modifiers
• Bootstrap 3 or 4: https://getbootstrap.com/docs/3.3/css/#overview-container
• MUI: https://www.muicss.com/docs/v1/css-js/container
• Bulma: https://bulma.io/documentation/layout/container/

Useful in any project.