.img-box {
    padding: 1em;
    background-color: #f2f2f2;
    border: 1px solid white;
}

.img-box img {
    padding-bottom: 1em;
}

footer { 
    position: fixed; 
    bottom: 0; 
    width: 100%; 
    background-color: white;
    text-align: center;
    padding: 0.2em;
    background-color: black;
    color: white;
}

footer a {
    color: white;
}
footer a:hover {
    color: silver;
}