Event ON plugin - how do i change fon size?

Envato Customers Purchases and Subscriptions
1

I would like to know how do i change font size on:
Day event
Time description
Location description

my website is http://www.magga.nl/agenda/

2

you can change font size on your plugin in by writing override css in your theme style css file. I would like to mention font-size css are currently coming from your eventON plugin css: eventON/assets/css/eventon_styles.css
You can change css into your plugin but in future when you will update the plugin your customize css will be gone. So, better if you write override css in your theme style css file. Thanks