body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    color: #333;
    max-width: 800px;
    margin: 40px auto;
    padding: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0px 0px 10px rgba(0,0,0,0.1);
}
h1 {
    color: #2c3e50;
}
button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    border-radius: 5px;
}
button:hover {
    background-color: #2980b9;
}
#ergebnis-text {
    font-weight: bold;
    margin-top: 20px;
    font-size: 18px;
}