body {
  font: 14px Helvetica, sans-serif;
  line-height: 1.5;
  padding: 5px 20px;
}
@media all and (min-width: 660px) {
  body {
    padding: 50px 20px;
  }
}

header, #wrapper {
  max-width: 600px;
  margin: 0 auto;
}
header {
  text-align: center;
}

code {
  background: #eee;
}

table {
  border-color: black;
  border-style: solid;
  border-width: 0 0 1px 1px;
}
table th, table td {
  text-align: left;
  vertical-align: top;
  padding: 5px 7px;
  border-color: black;
  border-style: solid;
  border-width: 1px 1px 0 0;
}