Acknowledgements: 

Banner artwork and Unit 1 and Unit 2 icons from Vijay Verma.

Main banner and cardinal logo created on Logo.com.

Google classroom logo and Unit 3 and Unit 4 icons created by Matt Blease (@mattblease).

Readings icon created by Ahmad Ayoub from ThePencilTail.com.

Assignment icon created by Yu Nagaba.

Late work icon from Chibird (link: https://chibird.com/post/70150450016/surrender-now-before-its-too-late-just-kidding).