html, body {
  margin: 0;
  padding: 0;
}
canvas {
  display: block;
}

html{
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow: hidden;
  background-color: grey;
}

body{
  margin-top: 10%;
  border-radius: 20px;
  box-shadow: 12px 9px 13px -1px black;
}