* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  background-color: black;
  width: 100%;
  height: 100%;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
}

canvas {
  flex: 0;
  box-shadow: rgb(0 0 0 / 20%) 0px 0px 100px 0px;
}