.snowflake {
    position: fixed;
    top: -10px;
    color: #4a90e287;
    font-size: 1em;
    user-select: none;
    pointer-events: none;
    z-index: 1000;
    animation: fall linear infinite;
}

@keyframes fall {
    to {
        transform: translateY(100vh) rotate(360deg);
    }
}