.photo {
    width: 45ch;
    height: 45ch;
    background: grey;
    border-radius: 5px;
    background-size: cover;
    background-position: center center;
    box-shadow: 0px 10px 30px -5px rgba(0,0,0,0.3);
    transition: box-shadow 0.5s;
    will-change: transform;
    border: 15px solid white;
}