body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow: hidden;
    line-height: 60%;
    background-image: url(background.png);
    color: white;
}
div {
    position: relative;
    font-size: 20px;
    padding: 6%;
    width: 100%;
    height: 100%;
}