#dm-calculator {
    max-width: 600px;
    margin: 20px auto;
    font-family: Arial, sans-serif;
}
.dm-inputs label {
    display: block;
    margin-bottom: 10px;
    font-size: 1.2em; /* increased font size */
}
.dm-presets p {
    margin: 10px 0 5px;
    font-weight: bold;
}
.dm-presets button {
    margin: 3px;
    padding: 5px 10px;
    cursor: pointer;
}
.dm-result {
    margin: 15px 0;
}