.ribbon {
    position: fixed;
    width: 10px;
    height: 10px;
    animation: ribbonFall 2s linear infinite;
    z-index: 99999;
}


@keyframes ribbonFall {
    0% {
        transform: translateY(-100%) rotate(0deg) scaleX(1);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(360deg) scaleX(-1);
        opacity: 0.5;
    }
}