.snow-wrap {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
    z-index: 99999;
}
.snowflake {
    position: absolute;
    top: -10%;
    color: white;
    animation: fall linear infinite;
}
@keyframes fall {
    0% { transform: translateY(0); }
    100% { transform: translateY(110vh); }
}