body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f5f5f5;
  color: #222;
}

.header {
  text-align: center;
  padding: 40px;
  background: #89AA74;
  color: white;
}

main {
  max-width: 800px;
  margin: 40px auto;
  padding: 0 20px;
}

section {
  background: white;
  padding: 20px;
  margin-bottom: 20px;
  border-radius: 8px;
}

h2 {
  margin-top: 0;
  border-bottom: 1px solid #eee;
  padding-bottom: 5px;
}