body {
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}

body, html, canvas {
    margin: 0;
    padding: 0;
    overflow: hidden; /* Hide scrollbars */
    width: 100%;
    height: 100%;
}

#GameCanvas:focus {
    outline: none;
}