html {
  font-size: 14px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, Helvetica, Arial, sans-serif, "Apple Color Emoji";
}

.container {
  width: 85%;
  max-width: 720px;
  background: #f1f2f3;
  margin: 0.65rem auto;
  padding: 0.65rem;
  border-radius: 4px;
}

.output {
  margin-top: 0.65rem;
  font-family: courier, sans-serif;
  font-size: 1rem;
}

h1 {
  opacity:  0.8;
}

.article {
  padding:1% 20%;
}