Copy function not working

The copy function is not working at all, the original id for copy was 'btn' but I have used that in the css.

The copy function is not working at all, the original id for copy was 'btn' but I have used that in the css.

Moving forward class .btn will be updated on main.css to avoid interference between the copy.css and main styles.css.

Hoping this could ease solving the issue.