body {
  font-family: sans-serif;
  margin: 0;
  padding: 0;
  background: #f4f4f4;
  color: #333;
}

header {
  background: #005f73;
  color: white;
  padding: 1rem;
  text-align: center;
}

nav a {
  margin: 0 1rem;
  color: #ffd166;
  text-decoration: none;
  font-weight: bold;
}

main {
  padding: 2rem;
}

footer {
  background: #333;
  color: white;
  text-align: center;
  padding: 1rem;
  position: relative;
  bottom: 0;
  width: 100%;
}