Hello,
Please use the below custom CSS code and paste it to Theme Setting >> CUSTOM CSS >> Global Custom CSS:
To add the image in Recipe category please use this custom CSS:
.category-ricette .page-title-default {
background-image: url(https://www.bindienzopienza.com/wp-content/uploads/2019/02/800px-Cacio_e_pepe.jpg);
}
To add the image in Tips & Tricks category please use this custom CSS:
.category-consigli .page-title-default {
background-image: url(https://www.bindienzopienza.com/wp-content/uploads/2019/02/800px-Cacio_e_pepe.jpg);
}
Note: Please change the image url in above both custom CSS and add the image URL which you want to use on specific categories.
Best Regards.