/* PAGE BACKGROUND */
body {
    font-family: Arial, sans-serif;
    text-align: center;
    background-color: #000000;   /* full black background */
    color: white;                /* all text white */
    margin: 0;
}

/* HEADER */
header {
    background-color: #111;
    color: white;
    padding: 20px;
}

/* SECTION TEXT */
section {
    margin-top: 40px;
    color: white;
}

/* NAVIGATION */
nav {
    margin-top: 15px;
}

nav a {
    color: white;        /* visible on black */
    margin: 10px;
    text-decoration: none;
    font-weight: bold;
}

nav a:hover {
    color: #bbbbbb;
}