Calendar size

Hello.
You can define the calendar size in the option parameter of booking shortcode, during inserting it into the post or page. Please check more here: https://wpbookingcalendar.com/help/booking-calendar-shortcodes/#booking-options

Example:
[booking nummonths=1 options='{calendar months_num_in_row=1 width=568px cell_height=40px}']

Kind Regards.