html {
    color: white;
    background-color: #1f1f1f;
}

h1, h4, p {
    text-align: center;
}

a:link {
    color: "#8080FF";
}

a:visited {
    color: "#A040A0";
}

#canvasdiv  {
    text-align: center;
    padding: 0;
    display: block;
}

#buttons {
    overflow: auto;
}

#buttons > div {
    float: left;
    text-align: center;
    height: 20%;
}

#ack > p {
    position: fixed;
    bottom: 0;
}