body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: linear-gradient(to bottom, darkred, black);
    color: white;
    height: 100%; /* Added to ensure body takes full height */
}

html, body {
    height: 100%; /* Added to ensure full height */
}

header {
    background: rgba(0, 0, 0, 0.7);
    padding: 10px 0;
}

nav ul {
    list-style: none;
    padding: 0;
    text-align: center; /* Center the menu content */
}

nav ul li {
    display: inline;
    margin-right: 20px;
}

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

main {
    text-align: center;
    height: calc(100% - 80px); /* Adjust height to account for header and footer */
}

footer {
    background: rgba(0, 0, 0, 0.7);
    text-align: center;
    padding: 10px 0;
    position: relative; /* Changed to relative */
    bottom: 0;
    width: 100%;
}

.centered {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    height: 100%; /* Ensures centered sections take full height available */
}