.achtergrond-jackal { background-image: url(../images/achtergronden/achtergrond_jackel.jpg); background-repeat: no-repeat }
.achtergrond-hulk1 { background-image: url(../images/achtergronden/achtergrond_hulk1.jpg); background-repeat: no-repeat }
.achtergrond-hulk2 { background-image: url(../images/achtergronden/achtergrond_hulk2.jpg); background-repeat: no-repeat }
.achtergrond-hulk3 { background-image: url(../images/achtergronden/achtergrond_hulk3.jpg); background-repeat: no-repeat }
.achtergrond-thorgal1 { background-image: url(../images/achtergronden/achtergrond_thorgal1.jpg); background-repeat: no-repeat }
.achtergrond-thorgal2 { background-image: url(../images/achtergronden/achtergrond_thorgal2.jpg); background-repeat: no-repeat }
.achtergrond-thorgal3 { background-image: url(../images/achtergronden/achtergrond_thorgal3.jpg); background-repeat: no-repeat }
.achtergrond-robbedoes { background-image: url(../images/achtergronden/achtergrond_robbedoes.jpg); background-repeat: no-repeat }
.achtergrond-guust { background-image: url(../images/achtergronden/achtergrond_guust.jpg); background-repeat: no-repeat }