.achter {  background-attachment: fixed; background-image: url(images/achter-grond.jpg); background-repeat: no-repeat; background-position: right top}
.tekst {  font-family: Arial, Helvetica, sans-serif; font-size: 12px; color: #000000}
.achter2 {  background-attachment: fixed; background-color: #FFFFFF; background-image: url(images/achter-grond2.jpg); background-repeat: no-repeat; background-position: right top}