Welcome back. ??
Give these steps a try. They’re taken from the child theme Codex article.
On your installation using a FTP or whatever file management tools your host provider offers you create this directory.
wp-content/themes/atomic-child
In that directory using a plain text editor create 2 files. The first file will be named style.css
and will have these lines in it.
/*
Theme Name: Atomic Child Theme for pianoservice.ca
Description: Atomic Child Theme
Template: atomic
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
*/
/* Your CSS modifications will go below this line */
.site-description {
font-size: 1.0rem;
}
The other file will be named functions.php
and will have these lines in it.
<?php
// Queue up the parent Atomic CSS
add_action( 'wp_enqueue_scripts', 'theme_enqueue_styles' );
function theme_enqueue_styles() {
wp_enqueue_style( 'atomic-parent-style', get_template_directory_uri() . '/style.css' );
}
That PHP code will make sure that the parent Atomic stylesheet is loaded. Make sure you do this in the new wp-content/themes/atomic-child
directory.
Now visit https://www.pianoservice.ca/wp-admin/themes.php
You should see something like this.

See the “Atomic Child Theme for pianoservice.ca” box? Hover your mouse over that and the Activate button will reveal itself. Activate the theme.
Once you do that the header image will revert to the theme default and any widgets you’ve setup but that’s easily fixed via this link.
https://www.pianoservice.ca/wp-admin/customize.php?url=https%3A%2F%2Fwww.pianoservice.ca%2F
If that all works then my next question is: how to you wish to reduce your title? The “Registered Piano Technician” portion? The CSS I added to the style.css
file is this.
.site-description {
font-size: 1.0rem;
}
The font-size
was reduced from 1.8rem
to 1.0rem
which made it appear smaller.
If that doesn’t work, let me know that too. ??