Showing one calendar in responsive and two calendars on desktop

Hello,

We are using latest version of flatpickr and so far works great with one issue. We have current setup to show 2 calendars since our users pick larger range dates. This all is working nicely until calendars open in smaller resolutions as then 2 calendars don't fit into view. Is there a solution to this problem or maybe we could show only one calendar bellow certain resolution. Is this possible? Any alternative ideas? Thank You in advance.