How can I ensure that availability calendar only show one month at a time? I'm displaying a calendar on a basic page and I have specified that I want the monthly views to show only 1 at a time.  1 per col / 1 per row. 

For some reason 3 are displayed.

my calendar can be seen at seosolutions.london




How can I only display 1 month at a time? can I hard code this anywhere?
I found a css fix for this:

availability_calendar.base.css

adding

.cal-viewport { width: 220px !important; }