html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  background: #000;
}

canvas {
  display: block;
  padding-left: 0;
  padding-right: 0;
  margin-left: auto;
  margin-right: auto;
  background-color: #23789c; /*#439eb3;*/
  background-image: url("../images/background/sky.png");
  background-size: cover;
  width: 800px;
  z-index: -1;
}

#rocket-ant-canvas {
  -webkit-touch-callout: none; /* iOS Safari */
  -webkit-user-select: none; /* Safari */
  -khtml-user-select: none; /* Konqueror HTML */
  -moz-user-select: none; /* Old versions of Firefox */
  -ms-user-select: none; /* Internet Explorer/Edge */
  user-select: none;
}