* {
  box-sizing: border-box;
}
html, body {
  margin: 0;
  width: 100%;
  height: 100%;
  background: #999;
  display: grid;
  place-items: center;
}

main {
  display: grid;
  gap: 1em;
  max-width: 90vw;
  width: 1100px;
  padding: 8vmin;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

graph {
  margin: auto;
  width: 100%;
  height: 400px;
  background: #ecefee;
  display: flex;
  flex-direction: column;
  box-shadow:
    -5px 5px 10px #0002,
    -1px 1px 5px #0009;
}

pre {
  box-shadow: inset .5em 0 0 #000;
  background: #fff;
  font-size: 16px;
  padding: 1em 2em;
  line-height: 1.2;
  margin: 0;
}

css-doodle {
  margin: auto;
  --rule: (
    @grid: 15x1 / 160px;
    @size: 20px 40px;
    background: #000;
    clip-path: @shape(triangle);
  );
}