body {
    background-color: #333;
    padding: 0;
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: #fff;
}

#header {
    background-color: #000;
    padding: 20px;
    text-align: center;
    font-size: large;
    font-weight: bold;
}

#filter {
    padding: 10px;
    text-align: center;
    border-bottom: 1px #000 solid;
}

#top-navigation {
    background-color: #333;
    padding: 20px;
    text-align: center;
    border-bottom: 1px #000 solid;
}

#top-navigation > div {
    display: inline-block;
    background-color: #333;
    padding: 10px;
    text-align: center;
    width: 200px;
}

a:hover, a:link, a:visited {
    color: #fff;
}