body {
    background-color: #333;
}

h1 {
    text-align: center;
    color: #c4c4c4;
}

.topnav {

    background-color: #999;
    text-align: right;
    overflow: hidden;
}

.nopnav a {
    float: right;
    color: #f2f2f2;
    text-align: right;
    padding: 14px 16px;
    text-decoration: none;
    font-size: 17px;
}

.topnav a:hover {
    background-color: #aaa;
    color: #000000;
}

.topnav a.active {
    background-color: #04AA6d;
    color: white;
}