[CSS] linear-gradient와 mask를 이용한 점박이 무늬(패턴) 배경

예시 사이트 : https://examples.motion.dev/react/scroll-linked 

Scroll-linked animations

header {
    display: flex;
    flex-flow: row nowrap;
    justify-content: center;
    align-items: center;
    gap: 10px;
    position: fixed;
    z-index: 1000;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px;
    background-image:radial-gradient(transparent 1px, #0b1012 1px);
    background-size:4px 4px;
    backdrop-filter:blur(8px);
    mask:linear-gradient(#000 calc(100% - 40px), #0000);
}