#snow-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
}
.snowflake {
    position: absolute;
    width: 20px;
    height: 20px;
    background-size: contain;
    background-repeat: no-repeat;
    user-select: none;
}