I want a fixed full-size fixed button to appear in the bottom of the screen.
How to do this?
Hey techplusweb,
This is normally added by some plugin if you want to have it on every page.
Here is an article for you:
https://www.wpbeginner.com/wp-tutorials/how-to-create-a-sticky-floating-footer-bar-in-wordpress/
If you need further assistance please let us know.
Best regards,
Victoria