How to upload and use free cdn and convert githun file into a cdn

How to upload and use free cdn and convert githun file into a cdn

Here is the Website :- https://statically.io/convert/

Real File :- https://github.com/SH20RAJ/BlondBtun/blob/main/blondbtun.css

Example :- https://cdn.statically.io/gh/SH20RAJ/BlondBtun/main/blondbtun.css