* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0)),
    linear-gradient(0deg, rgba(31, 16, 16, 0.7), rgba(19, 16, 31, 0)),
    linear-gradient(315deg, rgb(19, 17, 31), rgb(10, 10, 0));
  height: 100vh;
  overflow: hidden;
}
canvas {
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0.9;
  cursor: default;
}