body {
    background-color: #c0dbce;
    margin: 0;
    font-family: 'Roboto', sans-serif;
}

h1 {
    text-align: center;
}

h2 {
    text-align: center;
}

.marker {
    width: 60vh;
    display: block;
    margin-left: auto;
    margin-right: auto;
}






.knopdiv {
            display: flex; 
    justify-content: center;
}

.knop {

          width: 6em;
      align-items: center;
    background-color: white;
    color: black;
    border: 2px solid #198f69;
    padding: 16px 32px;
    text-align: center;
    text-decoration: none;


    font-size: 16px;
    margin: 4px 2px;
    transition-duration: 0.4s;


}

.knop:hover {
    background-color: #198f69;
    color: white;
    transition-duration: 0.4s;

}