[Plugin: The Events Calendar] Help Fixing Height

This question has probably been asked a million times, and I apologize for asking again, but I’ve tried and need help editing the height of my calendar and making all of the boxes even.

You can see an example on the left side of my sidebar:

http://cathmlittle.byethost18.com/wordpress/

I’d like the overall calendar height to be 228 pixels and all of the boxes within to be the same height. Please specify the CSS I need to edit, because I am a newbie! Thank you!

http://wordpress.org/extend/plugins/the-events-calendar/