body {
  background: transparent;
}
.back_img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.lyl .show {
  position: relative;
  width: 70%;
  height: 40%;
  cursor: pointer;
  margin: 16.2% auto 0;
}
.lyl .canvas {
  position: absolute;
  left: 0px;
  top: 0px;
  z-index: 1;
}
.lyl .backcanvas {
  position: absolute;
  left: 0px;
  top: 0px;
  z-index: 0;
}
.lyl .showleft {
  height: 100%;
  width: 16%;
}
.lyl .showleft .showitem {
  position: relative;
  z-index: 3;
  width: 100%;
  height: 18%;
}
.lyl .showright {
  width: 22%;
  height: 100%;
}
.lyl .showright .showitem {
  width: 100%;
  height: 18%;
  position: relative;
  z-index: 3;
}
.lyl .showright .showitem p {
  text-indent: 2em;
}