.vriendentabel {
    width: 100%;
    border-collapse: collapse;
    border: 2px solid #36752D;
    border-radius: 9px;
    font-family: Verdana, Arial, sans-serif;
}

.vriendentabel th {
    background: #36752D;
    color: white;
    padding: 10px;
    text-align: left;
}

.vriendentabel td {
    padding: 10px;
    color: #275420;
    border-top: 1px solid #C6FFC2;
}

.vriendentabel tr:nth-child(even) {
    background: #DFFFDE;
}

.alt td {
    background: #DFFFDE;
}

.onbekend {
    background: red;
}