html {

    width: 100vw;

    height: 100vh;

  background: 

    repeating-radial-gradient(circle at 85% 85%, #fff 0 0.75vmin, #fff0 0.85vmin 100%), 

    repeating-linear-gradient(180deg, #fff0 0 8vmin, #ffffff90 8vmin 9vmin, #0e0e0e 0 9vmin), 

    repeating-linear-gradient(90deg, #fff0 0 8vmin, #ffffff90 8vmin 9vmin, #0e0e0e 0 9vmin), 

    #0E0E0E;

    background-position: center center;

    background-size: 10vmin 10vmin;

}