Change CSS files version

Hello
When I use once of the Events Booking modules - Upcoming Events - on my Joomla 3.8.6 some css styles definitions change completely.
I saw that Events booking uploads bootstrap v2.1.1 and my template bootstrap v3.3.7

… /media/com_eventbooking/assets/bootstrap/css/bootstrap.css - Bootstrap v2.1.1
… /templates/rise/css/bootstrap.min.css - Bootstrap v3.3.7
… /templates/rise/css/custom.css
...

The documentation says that the layout is based on twitter bootstrap (both BS2 and BS3)
How can I use BS3?

Thank you

Done.
Thank you

Hi

For anyone has same question, just go to Events Booking -> Configuration, set Twitter Bootstrap Version config option to Twitter Bootstrap Version 3 and it will work OK

Regards,

Tuan