/**
 * Created by qq601 on 2016/8/26 0026.
 */
* {
  width: 100%;
  height: 100%;
  padding: 0;
  margin: 0;
  overflow-x: hidden;
  overflow-y: hidden;
}

#screen {
  width: 538px;
  height: 430px;
}

canvas {
  transition: all 0.1s;
}