.kong_shi_tu {
  top: 0px;
  left: 0px;
  width: 750px;
  height: 1624px;
  display: block;
  position: absolute;
  .canvas {
    width: 750px;
    height: 1624px;
    opacity: 1;
    display: block;
    left: 0px;
    top: 0px;
    position: absolute;
    transform-origin: 0px 0px 0px;
  }
}
