How do I remove the invisible border around the page?

Question

Nothing here

Hello. So I have this website https://codepen.io/EleanorFoxQueen/pen/YzOMNQQ and I don't know from when but it now has an invisible border. You can clearly see the purple border is and the website's border creates a gap. Please help me fix it. Thankyou

I don't know what to do

Answer 1

You probably need this:

body {
  margin:0;
}

And your marquee class has a bottom too. Try removing that