.achtergrondfoto {
    background-image: url("../images/foto amsterdam.jpg");
    background-repeat: no-repeat;
    background-position: center;

    background-size: cover;
    width: 100%;
    height: 100vh;
    /*min-height: 40em;*/
    /*max-height: 20em;*/
    background-attachment: fixed;
}
.paddingtekst{
    padding-top : 20%;
    padding-left : 70%;
}

.titel-centrum {
    position: absolute;
    top: 50%;
    left: 50%;
}