* {
  padding: 0;
  margin: 0;
}
html,
body {
  height: 100%;
  padding: 0;
  margin: 0;
  background-image: url("./index.jpg") norept center center;
  background-size: cover;
  background-attachment: fixed;
  background-color: #000;
}

.aa {
  position: fixed;
  left: 50%;
  bottom: 10px;
  color: #ccc;
}

.container {
  width: 100%;
  height: 100%;
}
canvas {
  z-index: 99;
  position: absolute;
  width: 100%;
  height: 100%;
}