All breakpoints mode

Definitely!
I encountered this issue numerous time. I integrate a website on the large breakpoint… but -of course- styles only apply to the biggest breakpoint.

Like I commented on this feature request:

It would be really handy to be able to select/change a breakpoint / state via a right click or better to allow us to rename the classe directly via a double-click on the class label. It would be even faster especially for groups.