:root {
  font-family: Arial, Helvetica, sans-serif;
  color: #161616;
  background: #f5f5f5;
}

body {
  margin: 0;
  line-height: 1.65;
}

main {
  max-width: 820px;
  margin: 48px auto;
  padding: 36px;
  background: #ffffff;
  border: 1px solid #e5e5e5;
  border-radius: 12px;
}

h1 {
  margin-top: 0;
  font-size: 32px;
}

h2 {
  margin-top: 32px;
  font-size: 21px;
}

nav {
  margin: 24px 0;
}

nav a,
a {
  margin-right: 16px;
  color: #1357b7;
}

small {
  color: #666666;
}

footer {
  margin-top: 42px;
  padding-top: 18px;
  border-top: 1px solid #e8e8e8;
  font-size: 14px;
  color: #555555;
}

code {
  background: #f2f2f2;
  padding: 2px 5px;
}