canvas {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
}
h1 {
  position: relative;
  color: #464678;
  text-align: center;
  line-height: 8rem;
  font-size: 2rem;
  z-index: 100;
}
.aim {
  position: fixed;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background: transparent;
  z-index: 50;
  -webkit-transform: translate3d(0, 0, 0);
}
.aim .c {
  position: absolute;
  top: 0;
  left: 0;
  width: 11px;
  height: 11px;
  background: #000;
  margin: -5px 0 0 -5px;
  transform: rotate(45deg);
  border: 1px solid #77f;
}
.aim .h {
  position: absolute;
  top: 1px;
  left: -50%;
  width: 200%;
  height: 1px;
  background: #77f;
  opacity: 0.5;
}
.aim .v {
  position: absolute;
  top: -50%;
  left: 1px;
  width: 1px;
  height: 200%;
  background: #77f;
  opacity: 0.5;
}