body {
    background-image: url("TBgallerySpritex10.gif");
    background-repeat: no-repeat;
    background-position: center;
    background-attachment: fixed;
    background-size: cover;
    place-content: center;
}

.gallery {
    margin-top: 30%;
    width: 80%;
    height: 50%;
    display: grid;
    place-self: center;
    place-content: center;
    place-items: center;
    grid-column-gap: 5%;
    grid-row-gap: 5%;
    grid-template-columns: fit-content(40%) fit-content(40%);
    grid-template-rows: fit-content(40%);
}

    .gallery > img {
        border-image-source: linear-gradient(black);

    }

img {
    transition: transform 0.25s ease;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

    img:hover {
        -webkit-transform: scale(1.2); /* or some other value */
        transform: scale(1.2);
    }