body {
  font-family: Arial, sans-serif;
  background-color: #f8f9fa;
  color: #222;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
  line-height: 1.6;
}

header, nav, main, footer {
  background-color: #fff;
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 30px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

nav ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

nav a {
  text-decoration: none;
  color: #007bff;
  padding: 8px 12px;
  border-radius: 5px;
  font-weight: bold;
}

nav a:hover {
  background-color: #e9ecef;
}

h1, h2 {
  color: #333;
}

ul {
  padding-left: 20px;
}