*:active {
    -webkit-tap-highlight-color: rgba(0,0,0,0);
    -moz-tap-highlight-color: rgba(0,0,0,0);
    tap-highlight-color: rgba(0,0,0,0);
}

body {
  background-color: #000;
  margin: 0;
  overflow: hidden;
}

#main_canvas_container {
  position: absolute;
  left: 0px;
  top: 0px;
  width: 100%;
  height: 100%;
}