/* Reset-ish */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
  color: #222;
}

/* Layout */
header {
  background: #111;
  color: #fff;
  padding: 2rem;
  text-align: center;
}

nav {
  background: #f4f4f4;
  padding: 1rem;
  text-align: center;
}

nav a {
  margin: 0 1rem;
  text-decoration: none;
  color: #333;
  font-weight: 500;
}

nav a:hover {
  text-decoration: underline;
}

main {
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1rem;
}

footer {
  background: #111;
  color: #fff;
  text-align: center;
  padding: 1rem;
}