Change Category Image in the background of Taglines area with CSS only

Hello IshYoBoy,

I have read all your previous instructions on changing the category featured image for the Koyp WP theme (https://support.ishyoboy.com/forums/topic/change-category-image-in-the-background-of-taglines-area/), but I would like to know if there is something different to follow for the Tayp WP theme.

As I’m not a code expert and I could not even find the “custom-functions.php” (only “functions.php”) file in the editor page – How could I do it via custom CSS, as you mentioned it is much easier?

Many thanks in advance!