.snow-effect {
    position: absolute;

    top: -425px;
    left: 1015px;

    width: 100%;
    height: 100%;

    z-index: -99;
    pointer-events: none;
    overflow: hidden;

    mix-blend-mode: screen;
}

.snow-effect video {
    position: absolute;

    top: 0;
    left: 0;

    width: 50%;
    height: 50%;

    object-fit: contain; /* หรือ cover */

    opacity: 1;
    filter: brightness(1.2) contrast(1.4);
}