Add copyright info to the footer

I would like to add copyright info to my brand spanking new WP site. I have jetpack turned on. Tried copying the footer.php into custom css and inserting the text, didn’t work. Or at least it didn’t when I previewed it.

I searched on here and on codex, didn’t find anything on this particular issue. There are a lot of footer change requests but none with the Runo Lite theme.

Thank you in advance.