Hello, so I have started making a mod recently, however I couldn't find any tutorials on how to make a custom "Furnace like" GUI. I found one for the 1.8 but I'm not sure if it woks in 1.16. When I tried to improvise i got nothing other then errors, so I don't really know how to make a GUI. That's why I need help. Does anyone know how to make a GUI like in a furnace or do you have any recent tutorials? Thank you in advance!