Help to find retro effect¡!

heres the one i use on my profile

<style>
body:before{
    content: " ";
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(rgb(0 0 0/ 50%) 50%, rgb(0 0 0 / 0%) 50%);
    z-index: 2;
    background-size: 100% 2px, 3px 100%;
    pointer-events: none;
}

</style>

mess with the "2px, 3px" to adjust the gap between lines!1!1 ><!!