html, body {
  margin: 0;
  padding: 0;
  background-color: black;
}
canvas {
  display: block;
  margin: auto;
  margin-top: 5%;
}

script {
  stroke-width: 5%;
  stroke: aqua;
  
}
/* canvas {
  stroke-width: 200px;
  stroke: aqua;
  margin-top: 5%;
} */