So i have a game with a layout/window = 970x546. This game will come in an IFrame with a website on top (some modals) and all of this will go inside another website. Now, when running the game, i can see green borders, clearly visible here that the game "view" has ended and it's just fill-up. Down below you can find some example images of my borders. You can clearly see where the game ends. The first 3 images are web, the other 4 are mobile.
It should be less of a problem on web, but when i test it on my phone, it's basically really small/zoomed out with lots of borders/fill-up that i don't want (see last 4 images). How can I make sure, in some way, that the borders do not show up?
HERE are the images: imgur.com/a/i2KhH .