.button{
    background-color: #4CAF50;
    border: none;
    padding: 20px 26px;
    margin: 4px 2px;
    font-size: 20px;
}

#terugknop{
background-color: #50DB8B;
width: 111px;
height: 30px;
position: relative;
}

#terugknoptext {
text-align: center;
position: relative;
color: black;
top: 20%
}

a {
text-decoration: none;
}