Resize browser viewport to a breakpoint width (plus Diffy window padding).
When(/^(?:I |we )?resize window to "([^"]*)")
Example #1: When I resize window to "1200"
Example #2: When we resize window to "640"
Example #3: When I resize window to "320"
Example #4: When we resize window to "768"
Example #5: When I resize window to "1024"
Example #6: When we resize window to "1440"
Example #7: When I resize window to "1920"
Example #8: When we resize window to "375"