I have 3 categories in my Wordpress site and I've linked them to 3 specific pages so the URL is site/tag/candles, etc.

My issue is that I'd like to add a banner specific to each category, so on the Candles category page I want a banner at the top related to candles, and then the same for the other two categories.

Is there a way I can add a category specific banner at the top of each page? I know that I can go to Posts->categories and edit descriptions and other items but I'm referring to custom html or a banner image for each one. I was planning on using an if statement to check for the three category names and display the appropriate image

I can go to Theme File Editor where I have a categories.php file, but I'm just not sure where I would need to place my PHP/HTML