Why the shadows in class typo2 isn't working ??

Question

https://code.sololearn.com/WXAl8xZiNAB0/?ref=app

Answer 1

There is a gap between "rgba" and "(0,0,0,0.5);", fix it and it will work as it is supposed to.

Answer 2

See my copy of your code this is just one way to do OT.