/* Reset default margins and paddings */
body, h1, h2, h3, p, ul, li {
    margin: 0;
    padding: 0;
}

/* Set a background color for the whole page */
body {
    background-color: #f2f2f2;
    font-family: Arial, sans-serif;
}

/* Style the header */
header {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 10px;
}

/* Style the navigation */
nav ul {
    list-style: none;
    display: flex;
    background-color: #444;
}

nav li {
    margin-right: 10px;
}

nav a {
    text-decoration: none;
    color: #fff;
    padding: 5px;
}

/* Style the main content */
main {
    padding: 20px;
}

section {
    margin-bottom: 20px;
}

/* Style the footer */
footer {
    background-color: #444;
    color: #fff;
    text-align: center;
    padding: 10px;
}