How to add a CRT TV filter to your profile

This code was used to add the texture to both of these layouts so I'm not obviously not the original creator. :) (https://layouts.spacehey.com/layout?id=133 and https://layouts.spacehey.com/layout?id=1430)) 

body::before {
content: " ";
display: block;
position: fixed;
top: 0;
left: 0;
bottom: 0;
right: 0;
background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.06), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.06));
z-index: 2;
background-size: 100% 2px, 3px 100%;
pointer-events: none;
}

I hope this helps somebody! :)