.pulse-background {
    animation-duration: 20s;
    animation-name: pulse;
    animation-iteration-count: 1;
}

@keyframes pulse {
    from {
        background-size: 100%;
    }
    to {
        background-size: 120%;
    }
}

.place-up {
    animation-duration: 2s;
    animation-name: placeup;
    animation-iteration-count: 1;
    position: relative;
}

@keyframes placeup {
    from {
        top: 1200px;
    }
    to {
        top: 0px;
    }
}

.place-down {
    animation-duration: 2s;
    animation-name: placedown;
    animation-iteration-count: 1;
    position: relative;
}

@keyframes placedown {
    from {
        top: -1200px;
    }
    to {
        top: 0px;
    }
}