body {
    font-family: Arial, sans-serif;
    margin: 20px;
}

h1,
h2 {
    color: #333;
}

label {
    display: block;
    margin-bottom: 5px;
}

input[type="number"] {
    width: 60px;
}

button {
    margin-top: 20px;
}

#ergebnis {
    margin-top: 20px;
    font-weight: bold;
}