.img_s img {
    animation: an 6s linear infinite;
}

@keyframes an {
    0% {
        transform: translateY(5vh);
    }
    25% {
        transform: translateY(0vh);
    }
    50% {
        transform: translateY(5vh);
    }
    75% {
        transform: translateY(0vh);
    }
    100% {
        transform: translateY(5vh);
    }
}


/*an1=================*/

.img_s1 img {
    animation: an1 6s linear infinite;
    transform: translateX(10vw);
}

@keyframes an1 {
    0% {
        transform: translateY(1vh) translateX(80vw);
    }
    25% {
        transform: translateY(0vh) translateX(80vw);
    }
    50% {
        transform: translateY(3vh) translateX(80vw);
    }
    75% {
        transform: translateY(0vh) translateX(80vw);
    }
    100% {
        transform: translateY(1vh) translateX(80vw);
    }
}


/*an1=================*/


/*an1=================*/

.img_s3 img {
    animation: an3 6s linear infinite;
}

@keyframes an3 {
    0% {
        transform: translateY(1vh);
    }
    25% {
        transform: translateY(0vh);
    }
    50% {
        transform: translateY(3vh);
    }
    75% {
        transform: translateY(0vh);
    }
    100% {
        transform: translateY(1vh);
    }
}


/*an1=================*/