Add github code in wordpress

• Add your code in Gist
• add the below code into the child theme functions.php file

https://gist.github.com/a3f9ad3fb029a6929d48

• Then copy your Gist file URL, example : https://gist.github.com/username/a3f9ad3fb029a6929d48/

• Remove Username , example : https://gist.github.com/a3f9ad3fb029a6929d48/

Then Add this URL to your wordpress post