Hey!
Thanks for reaching out to our forums, you can change how the events calendar is styled we have three different type of styles that you can change directly from the admin panel:
Events > Settings > Display
This will help you to give you a start point to add your custom styles around each section, we have a detailed article about the customization of the templates as well that might be helpful for you. Another recommendation is to test for any possible conflict on your site to see if there’s no other plugin causing the issue.
Please let me know if you have any other questions about this issue or if there’s anything else I can do for you.
Thanks,
Crisoforo