.rc-calculator {
    max-width: 500px;
    margin: 20px auto;
    padding: 20px;
    background: #f9f9f9;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-family: Arial, sans-serif;
}

.rc-calculator h3 {
    margin-bottom: 20px;
    text-align: center;
}

.rc-calculator form label {
    display: block;
    margin-bottom: 10px;
    font-weight: bold;
}

.rc-calculator input {
    width: 100%;
    padding: 6px;
    margin-top: 4px;
    margin-bottom: 10px;
}

.rc-calculator button {
    width: 100%;
    padding: 10px;
    background: #0073aa;
    color: white;
    font-size: 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.rc-calculator button:hover {
    background: #005c8a;
}

#results {
    margin-top: 20px;
    background: #eef;
    padding: 15px;
    border-radius: 6px;
}