Hello Daniel
That site does look sharp!
Unfortunately, to achieve that look will require more than just some CSS. The Themer’s Guide https://theeventscalendar.com/knowledgebase/themers-guide/ can provide additionally guidelines for overriding layouts that would involve rearranging where various elements are located. This would entail a fair knowledge of PHP skills as well.
We do have a page of recommended people who can customize further: Find A Customizer.
We certainly can provide feedback upon the code you write, but we’re limited in helping with styling and customizations, per our Scope of Support / Terms.
Is there anything else I can help you with?
Thanks
Courtney 🙂