* {
    margin: 0;
    background-color:honeydew;
}


.img-gallery {
    display: flex;
    gap: 1rem;
    margin: 2vw;
}


.gallery-item1 {
    flex: 33%;
    padding: 1rem;
    animation-name: 'translate';
    animation-duration: 2.5s;
    animation-timing-function: ease-in-out;
    animation-iteration-count: infinite;
}

.gallery-item2 {
    flex: 33%;
    padding: 1rem;
    animation-name: 'translate';
    animation-duration: 2.5s;
    animation-delay:.5s;
    animation-timing-function: ease-in-out;
    animation-iteration-count: infinite;
}

.gallery-item3 {
    flex: 33%;
    padding: 1rem;
    animation-name: 'translate';
    animation-duration: 2.5s;
    animation-delay: 1s;
    animation-timing-function: ease-in-out;
    animation-iteration-count: infinite;
}

.gallery-item1, .gallery-item2, .gallery-item3, img{
    object-fit:cover;
    width: 100%;
    height: 30vw;
}


@keyframes translate {
    0%
    {transform:none;}

    25%{
        transform: translateY(-25px)
    }

    50%
    {transform: translateY(40px)}

    75% 
    {transform:translateY(0)}

    100%
    {transform:none;}
}