body{

    margin:0;
    background:#f4f6f9;
    font-family:Arial,Helvetica,sans-serif;

}

.container{

    width:1100px;
    max-width:95%;
    margin:40px auto;

}

h1{

    text-align:center;
    margin-bottom:35px;

}

.kaart{

    background:white;
    border-radius:12px;
    padding:25px;
    margin-bottom:25px;

    box-shadow:0 3px 12px rgba(0,0,0,.08);

}

h2{

    margin-top:0;

}

.titel{

    color:#0066aa;
}

.blok{

    margin-top:20px;

}

.knop{

    margin-top:25px;

    width:100%;

    background:#0077cc;

    color:white;

    border:none;

    padding:15px;

    border-radius:8px;

    cursor:pointer;

    font-size:18px;

}

.knop:hover{

    background:#005fa3;

}

.aantal{

    margin-top:20px;

    font-size:30px;

    font-weight:bold;

    text-align:center;

}