.inner-page {
    overflow: hidden;
    padding: 35px 0;
}

    .inner-page .boxes {
        display: block;
        overflow: hidden;
        position: relative;
        z-index: 1;
    }

li.ItemImgDetailChild {
    list-style: none;
}

    li.ItemImgDetailChild a img {
        display: block;
        width: 100%;
        height: 250px;
        object-fit: cover;
    }

ul.ListImgChildPhoto {
    padding: 0;
    display: grid;
    grid-auto-rows: minmax(min-content,max-content);
    grid-template-columns: repeat(3,minmax(0,1fr));
    column-gap: 15px;
    row-gap: 15px;
}

li.ItemImgDetailChild a {
    display: block;
    height: 100%;
}