Height of last line not adapting to others

I have a style and responsive problem with the schedule, i did a few things to work around but i did not find any solution.

?As the Radio should be 24/7 the Schedule is also 24 Hours. But the last line is not working out, because the Schedule stops at 23:00 and the last Program is only visible as a small box (because its from 22:00-0:00, so not a large timeframe), and if i want to view it in tablet view its almost not visible – unless it goes to mobile view with the list, this works.

The Views:
Desktop view is ok, even when the last line of Event boxes is too small
Mobile View works nice with the list
– but tablet views are not working – the last line of boxes are cut off.

So my Question to solve this problem:

1. can i make the last timetable box line longer ? or stretch it? – its already stretched until 150px , but the last line does not adopt it.?
or
2. can it switch to mobile view (list) earlier – so we avoid the tablet view?
some css for that ??

The page I need help with: [log in to see the link]