body {
    font-family: sans-serif;
    font-size: 80%;
}

h1 {
    background-color: #C3E4F1;
    padding: 4;
    font-weight: bold;
}

div.feld {
    border: 1px solid #008;
    padding: 2mm;
    background-color: #f0f8ff;
    margin-left: 10mm;
    font-family: monospace;
    font-size: 1.5em;
}

hr {
    border: 0;
    height: 1px;
    color: #000;
    background-color: #000;
}