hii anon, and dont worry i dont mind getting asks about my code, as i used codes from other people too!! so credits goes to all people who wrote these codes, and im always more than happy to give the codes i used to people : 3 im sure you mean the filter on my page, heres the code i used for it:

body::before { content: " "; display: block; position: fixed; top: 0; left: 0; bottom: 0; right: 0; background: linear-gradient(rgb(0 0 0 / 30%) 50%, rgb(0 0 0 / 0%) 30%); z-index: 2; background-size: 100% 2px, 3px 100%; pointer-events: none; }