html {
    background: url(img/bgSpace.jpg) no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
    height:100%;
    min-height:100%;
}
body {
    margin: 0px;
    padding: 0px;
    width: 100%;

    /*background-image: url(img/bodybg.png);
    background-repeat: no-repeat;
    background-position: center;*/
    overflow: hidden;
}
canvas {
    display: block;
    margin-top: 0px;
    margin-left: auto;
    margin-right: auto;
    position: absolute;
}