in lay options → custom css & html → custom html at bottom add:

<style>
    .my-copyright{
        position: fixed;
        bottom: 3px;
        right: 3px;
        z-index: 999;
    }
</style>
<div class="my-copyright _Default_no_spaces">
    My Copyright Text
</div>

If you go to "textformats" in wp-admin
You see every textformat has a html class:

I used "_Default_no_spaces" as the html class in <div class="my-copyright _Default_no_spaces">…
You can use any textformat html class and just add _no_spaces as a html class to use this textformat without any space top / space bottom styles.

This was the question:

Hi! I can’t seem to post in the forum so I’m trying it here. I can’t get my footer background to be transparent. I tried the simple codes I saw in other support posts but nothing worked.
I basically just want a small copyright on the bottom of all pages that has transparent background. Plus I tried to make it sticky and that also didn’t work.
Could you point me to a tutorial where it is explained in a simple way? (Both transparent footer and sticky footer)
Thank you in advance!