#portrait1 {
    background-image: url('../img/portrait1.jpg');
}

#portrait2 {
    background-image: url('../img/portrait2.jpg');
}

#portrait3 {
    background-image: url('../img/portrait3.jpg');
}

#portrait4 {
    background-image: url('../img/portrait4.jpg');
}

#portrait5 {
    background-image: url('../img/portrait5.jpg');
}