#post {
    position: relative;
    width: 640px;
    height: 500px;
    margin: 0 auto;
    text-align: center;
}

.farbe1 {
    background-color: white;
}

.farbe2 {
    background-color: white;
}

.farbe3 {
    background-color: white;
}

.titel {
    font-size: x-large;
    color: #FF0000;
}