How do I completely remove the scrolling screen?

Question

The game goes beyond the screen.
https://code.sololearn.com/Ww6S7hCbD1IR/?ref=app

Answer 1

position:fixed;
top:0;
left:0;
width:100vw;
height:100vh;

write this in body stylesheet...

Answer 2

Overflow : hidden; will work for you in body

Answer 3

Thanks