html,
body {
  margin: 0;
  padding: 0;
  background-color: #222;
}

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

main {
    width: 1000px;
    height: 800px;
}

canvas {
  background-color: black;
  width: 100%;
  height: 100%;
}

p, 
aside {
  display: inline;
  color: white;
}