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

header {
    background-color: #333;
    color: #fff;
    padding: 1em;
    text-align: center;
}

nav {
    background-color: #ccc;
    padding: 0.5em;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    text-align: center;
}

nav li {
    display: inline-block;
    margin: 0 1em;
}

nav a {
    color: #333;
    text-decoration: none;
}

nav a:hover {
    color: #fff;
    background-color: #333;
    padding: 0.2em;
}

main {
    padding: 2em;
    flex: 1;
}

section {
    margin-bottom: 2em;
}
.page-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh; /* 100% of the viewport height */
}

section h2 {
    margin-top: 0;
}
footer {
    background-color: #333;
    color: #fff;
    padding: 1em;
    text-align: center;
}