#dog-container {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
}

.gallery-photo {
    width: 100px;
    grid-column: 1fr;
}

#dog-photo {
    animation: dog-photo-enter 1s steps(15, end) forwards;
}

@keyframes dog-photo-enter {
    from { filter: brightness(200%); scale: 0; translate: 0 10px; }
    50% {  filter: brightness(150%); scale: .5; translate: 0 -15px; }
    to { filter: brightness(100%); }
}