#background {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    opacity: 0.2;
    background-repeat: no-repeat;
    background-position: 50% 0;
    background-size: cover;
}

#background.tabId-21 {
	/*background-image: linear-gradient(transparent, white 70%), url('Images/backgrounds/recycle-logo-environment.jpg');*/
}

/* Odpadne vode */
#background.tabId-99 {
    background-image: linear-gradient(transparent, white 70%), url('Images/backgrounds/dirty-drain-water-pollution-river.jpg');
}

/* Vodooskrba */
#background.tabId-95 {
    background-image: linear-gradient(transparent, white 70%), url('Images/backgrounds/clean-water.jpg');
}

/* Odpadki */
#background.tabId-98 {
    background-image: linear-gradient(transparent, white 70%), url('Images/backgrounds/waste.jpg');
}

/* Razvoj */
#background.tabId-36 {
    background-image: linear-gradient(transparent, white 100%), url('Images/backgrounds/construction.jpg');
}