um

here's a css code thingy to paste into the box for it! the background colour has to be entered as a colour hex [like the example pasted into it]. you can change it by just erasing the one i put in with your own. how to find a colour : just search up color hex and it'll give you some websites that let you pick a colour then say what hex number it is.

for the image part, just drag and drop the gif/image into the brackets. the code is below and should work the way i've pasted it here to be.

body {