:root {
  color-scheme: dark;
  font-family: system-ui, sans-serif;
  background: #111318;
  color: #e5e5e5;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
main {
  width: 1200px;
  margin: 20px auto;
}
h1 {
  margin: 0 0 4px;
  font-size: 22px;
}
p {
  margin: 0 0 12px;
  color: #aeb2ba;
  font-size: 14px;
}
canvas {
  display: block;
  width: 1200px;
  height: 640px;
}