html,
body {
  margin: 0;
  min-height: 100%;
  padding: 0;
}

body {
  background: #f4f1eb;
  color: #242424;
  display: flex;
  font-family: Georgia, "Times New Roman", serif;
  justify-content: center;
  line-height: 1.45;
}

.page {
  box-sizing: border-box;
  max-width: 760px;
  padding: 32px 24px 40px;
  width: 100%;
}

.masthead {
  margin: 0 auto 20px;
  max-width: 580px;
}

.masthead h1 {
  font-size: 32px;
  font-weight: 500;
  line-height: 1.1;
  margin: 0 0 10px;
}

.masthead p {
  color: #555;
  font-size: 16px;
  margin: 2px 0;
}

.sketch-holder {
  background: #303030;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
  line-height: 0;
  margin: 0 auto 24px;
  position: relative;
  width: 580px;
}

canvas {
  display: block;
  image-rendering: pixelated;
}

.notes {
  font-size: 17px;
  margin: 0 auto;
  max-width: 580px;
}

.notes h2 {
  font-size: 18px;
  font-weight: 600;
  margin: 22px 0 6px;
}

.notes p {
  margin: 0 0 14px;
}

.notes ul {
  margin: 0 0 18px;
  padding-left: 22px;
}

.notes li {
  margin: 3px 0;
}

.notes a {
  color: #154f84;
  text-underline-offset: 2px;
}

@media (max-width: 640px) {
  .page {
    padding: 24px 16px 32px;
  }

  .masthead,
  .notes,
  .sketch-holder {
    max-width: 100%;
  }

  .sketch-holder {
    overflow-x: auto;
    width: 100%;
  }
}