Yes, you can customize the design of Mini Courses with CSS.
However, we already provide some customization options to you without having to deal with custom CSS. Refer this article for a comprehensive guide about customizing the design of a Mini Course.
Step 1: Enable adding scripts to Header and Body of your Mini Course
Go to the Mini Course which you want add custom CSS codes.
Click Mini Course Settings on top right of your screen.
Select Advanced tab and enable Add header and body scripts option.
Add your Header or Body Script and click Save button.
Click Preview and see if your custom CSS codes work.
❓ Please reach out us via chat-bot widget on bottom-right on your screen if you have any question about adding custom CSS codes to your Mini Course.