A WordPress child theme lets you make changes without affecting the parent theme.
In the file manager, go to public_html/wp-content/themes, create a child them folder such as “iconic-one-child”. Under the child them directory, create two files style.css and functions.php.
style.css: make sure Template is the exact directory name of the parent theme
/*
Theme Name: Iconic-One Child
Theme URI: https://themonic.com/iconic-one/
Description: Iconic-One Child Theme
Author: Your Name
Author URI: http://example.com
Template: iconic-one
Version: 1.0.0
*/
/*Add your custom styles here */
functions.php:
Got to your WordPress dashboard, navigate to Appearance –> Themes and activate the child theme.