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

header {
  background-color: #0073e6;
  color: white;
  padding: 1rem;
  text-align: center;
}

nav a {
  color: white;
  margin: 0 10px;
  text-decoration: none;
}

nav a.active {
  text-decoration: underline;
}

main {
  padding: 2rem;
  text-align: center;
}

button {
  background-color: #0073e6;
  color: white;
  border: none;
  padding: 10px 20px;
  margin-top: 15px;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background-color: #005bb5;
}

footer {
  background-color: #333;
  color: white;
  text-align: center;
  padding: 1rem;
  margin-top: 30px;
}