/* General Styles */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
    color: #333;
    line-height: 1.6;
}

/* Header */
header {
    background: #007BFF;
    color: #fff;
    padding: 20px 0;
    text-align: center;
}

/* Navigation */
nav ul {
    list-style: none;
    padding: 0;
    text-align: center;
    background: #333;
}

nav ul li {
    display: inline;
    margin: 0 10px;
}

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

/* Sections */
main section {
    padding: 20px;
    margin: 20px auto;
    max-width: 800px;
    background: #fff;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    border-radius: 5px;
}

/* Footer */
footer {
    text-align: center;
    padding: 10px 0;
    background: #333;
    color: #fff;
    margin-top: 20px;
}