#flying-santa {
    position: fixed;
    top: 15%;
    left: -200px;
    width: 180px;
    height: 100px;
    background-image: url("santa.png");
    background-size: contain;
    background-repeat: no-repeat;
    z-index: 99999;
    animation: santaFly 20s linear infinite;
    pointer-events: none;
}

@keyframes santaFly {
    0% {
        transform: translateX(0) translateY(0);
        opacity: 0;
    }
    5% {
        opacity: 1;
    }
    50% {
        transform: translateX(50vw) translateY(-40px);
    }
    100% {
        transform: translateX(120vw) translateY(20px);
        opacity: 0;
    }
}