.topic {
    background-color: white;
    border:3px solid #f3f3f3;
    margin: 15px;
    text-align: center;
}

.datens-content {
    background-color: white;
    border:3px solid #f3f3f3;
    margin: 15px;
    padding: 75px;
    text-align: left;
}