Template CSS overridden

Hi - sorry if this is a beginners question but....

I am building a site using Joomla 3 and a Yootheme template "Monday".

When I created a menu option to display a list of upcoming events, the result uses CSS from the event manager and not from my template e.g. the fonts, sizes of h1, h2 etc. etc.

Have I missed something or is there an easy way to force the template CSS to be used? I hoped it would inherit most of these attributes to keep with the template styling.

If you can post a link to an example page on your site, I can grab the relevant CSS from your site and guide you through making the changes

tn.3rsit.com/index.php/courses

EB doesn't seem to really be doing anything to your template's h1 h2 etc styles, other than changing the margin spacing slightly on the course listing page, and on the details page adding a gray background behind the header. The green color is coming from your template. See the attached style explanation.
How would you LIKE the headers to appear? If you can mark-up a screenshot explaining what you'd like, I can help you with the code.