body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f4f4f4;
}

h2 {
    color: #333;
}

form {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

label {
    margin-top: 10px;
    display: block;
    color: #666;
}

input[type=number] {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    margin-bottom: 20px;
    border-radius: 5px;
    border: 1px solid #ddd;
    box-sizing: border-box; /* Ensures padding does not affect overall width */
}

button {
    background-color: #5cb85c;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background-color: #4cae4c;
}

#result {
    margin-top: 20px;
    padding: 20px;
    background-color: #dff0d8;
    color: #3c763d;
    border-radius: 5px;
    border: 1px solid #d6e9c6;
    display: none;
}

/* Shows the result div when it has content */
#result:not(:empty) {
    display: block;
}