body {
    font-family: lucida grande, sans-serif;
    margin: 0;
    padding: 0;
    color: #f0f0f0; /* light font color */
    background-color: #333; /* dark background */
}

header {
    background-color: #222; /* slightly darker than body for contrast */
    padding: 20px 0;
    text-align: center;
}

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

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

nav ul li a {
    text-decoration: none;
    color: #f0f0f0; /* light font color for links */
}

main {
    padding: 20px;
    text-align: center;
}

table {
    width: 100%;
    margin-top: 20px;
    border-collapse: collapse;
}

table, th, td {
    border: 1px solid #555; /* lighter border for visibility */
}

th, td {
    padding: 10px;
    text-align: left;
}

footer {
    background-color: #222; /* matching header */
    text-align: center;
    padding: 10px 0;
    position: fixed;
    width: 100%;
    bottom: 0;
}