body {
  font-family: sans-serif;
  max-width: 50rem;
  margin: 0 auto;
}

code > pre {
  border-left: 3px solid grey;
  padding: 0.25rem;
  background-color: #F8F8F8;
}

section {
  background-color: rgb(240, 220, 220);
  padding: 1rem;
}

table {
  border-collapse: collapse;
}

td, th {
  border: 1px solid black;
}