/* Reset default margin and padding */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Body styles */
body {
    font-family: Arial, sans-serif;
}

/* Header styles */
header {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 20px 0;
}

/* Main content styles */
.calculator {
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

input[type="number"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
}

button {
    padding: 10px 20px;
    background-color: #333;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #555;
}

p#result {
    margin-top: 10px;
    font-weight: bold;
}

/* Footer styles */
footer {
    position: fixed;
    bottom: 10px;
    width: 100%;
    text-align: center;
    color: #999; /* Adjust color as needed */
    font-size: 14px;
}