html {
     background: black;
     height:100%;
     min-height:100%;
 }
body {
    margin: 0px;
    padding: 0px;
    width: 100%;
    overflow: hidden;
}
canvas {
    background-image: url("img/backgrounds/background.jpg");
    background-size:     cover;
    background-repeat:   no-repeat;
    background-position: center center;
    display: block;
    margin-top: 0px;
    margin-left: auto;
    margin-right: auto;
    position: absolute;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    outline: none;
    -webkit-tap-highlight-color: rgba(255, 255, 255, 0);
}
#orientation {
    margin: 0 auto;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url(img/rotate-phone.png);
    background-repeat: no-repeat;
    background-position: center;
    background-color: rgb(0, 0, 0);
    z-index: 999;
    display: none;
}