html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  font-family: sans-serif;
  color: #333;
  background: #f9f9f9;
  line-height: 1.6;
}

.wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
}

main {
  flex-grow: 1;
}

header{background:#004d80;color:#fff;padding:1rem 2rem;}
nav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;}
nav li{position:relative;}
nav>ul>li{margin-right:1.5rem;}
nav a{color:#fff;text-decoration:none;padding:.5rem 0;display:block;white-space:nowrap;}
nav li ul{display:none;position:absolute;top:100%;left:0;background:#0066aa;min-width:200px;z-index:1000;}
nav li:hover ul{display:block;}
nav li ul li{margin:0;}
main{max-width:960px;margin:2rem auto;padding:2rem;background:#fff;box-shadow:0 0 10px rgba(0,0,0,.05);}
footer{background:#eee;text-align:center;font-size:.8rem;padding:1rem;}
pre{white-space:pre-wrap;}

.footer-minimal {
  background: #f5f5f5;
  color: #444;
  font-size: 0.85rem;
  padding: 20px 10px;
  border-top: 1px solid #ddd;
}

.footer-inner {
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
}

.footer-links {
  margin-bottom: 6px;
}

.footer-links a {
  color: #444;
  text-decoration: none;
  margin: 0 6px;
}

.footer-links a:hover {
  text-decoration: underline;
}

.footer-copy {
  color: #888;
}