body {
  font-family: Arial, sans-serif;
  margin: 40px;
  color: #2E3440;
  background: #f4f6f8;
}

main {
  max-width: 720px;
  background: #ffffff;
  padding: 24px;
  border: 1px solid #dddddd;
}

img {
  display: block;
  margin: 16px 0;
  max-width: 100%;
}

code {
  background: #eeeeee;
  padding: 2px 4px;
}