/* Example using Bootstrap */
@import url('https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css');

body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

.header, .footer {
    background: #333;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
}

.nav ul {
    list-style: none;
    padding: 0;
}

.nav ul li {
    display: inline;
    margin-right: 10px;
}

.nav ul li a {
    color: #fff;
    text-decoration: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

.calculator-container {
    margin-top: 20px;
}

.form-group {
    margin-bottom: 15px;
}

button {
    padding: 10px 15px;
    background: #333;
    color: #fff;
    border: none;
    cursor: pointer;
}

button:hover {
    background: #555;
}

.result {
    margin-top: 20px;
}