Creating Youtube Banner

Today, I was trying to create a banner for my (upcoming) YouTube channel. I used Canva to get started. It has a lot of templates to get started. This can be a rabbit hole 😄 But I finalized the one I liked. After customizing the template to my liking, I was ready to upload it to youtube. But .. Turns out, depending on the device where are watching YouTube, different parts of the banner are visible.