.background1 {
    background-image: url("/img/dpt1.png") !important;
    background-size: cover !important;
}

.background2 {
    background-image: url("/img/eqp11.jpg") !important;
    background-size: cover !important;
}

.background3 {
    background-image: url("/img/dpt2.JPG") !important;
    background-size: cover !important;
}

.hidden {
    opacity: 0;
}

.visible {
    opacity: 1;
}