Hi Emily,
Thanks for reaching out! First, I’d recommend taking a look at this article – adjusting the settings might solve your problem, without the need to add any CSS! I’d be happy to help you further with this, but first will you please post this question in our Events Calendar PRO forum? We use the Pre-Sales forum to answer questions about the features of our premium plugins for those interested in purchasing them. Please also note that we are a bit limited in the amount of support that we can provide for customizations.
If you have not purchased one of our premium plugins, you can post in our community forum on wordpress.org, which we review weekly to check for bug reports. If you need more in-depth support, you will need to purchase a license.
Our knowledgebase is a great place to start looking for answers. You can also search our premium forums to see if another user has posted about a similar issue.
Thanks,
Jennifer