.block-full-image {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.block-full-image .field,
.block-full-image .media,
.block-full-image .field--item {
    width: 100%;
    height: 100%;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.block-full-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
    display: block;
}