CSS issues on add events

for the life of me I cannot figure out how to get the date and time fields to be all in one row on the add events link.

https://www.theridingsociety.com/add-event/

I want the ‘start date’, box, ‘end date’ and box all to be in one row
and then
‘start time’, box, ‘to’, box to be in one row.

Do I need to change this over to a table format?

https://www.ads-software.com/plugins/events-manager/