How can i bulid this effect to website with no background

Question

How can I do this :

 https://codepen.io/aleksander-koty/pen/KeaGQB

But with no background only this star and line

org project : 

 https://codepen.io/kenchen/pen/tgBiE

Answer 1

In the CSS file you have a tag like this:

There you can change your background color with your color you want:

  body {
  background: mix(#3f3251, white, 70%);
}

Next time please do your homework. Here's a good tutorial to learn CSS: https://www.w3schools.com/Css/