This idea has been merged into another idea. To comment or vote on this idea, please visit WEBFLOW-I-4330 Lock a breakpoint.
Have the designer remember changes to the widths of breakpoints. Currently, each breakpoint resets to it's default width when switching another breakpoint. For example, after expanding the mobile view to 360px, it will reset to it's default 320px when leaving that breakpoint. This could also be achieved by allowing the default breakpoints to be set for each project.