body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f9f9f9;
  color: #333;
}

header {
  background: #222;
  color: white;
  padding: 20px;
  text-align: center;
}

main {
  max-width: 800px;
  margin: 20px auto;
  padding: 10px;
}

section {
  background: white;
  margin-bottom: 20px;
  padding: 15px;
  border-radius: 5px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

ul {
  list-style: none;
  padding: 0;
}

li {
  margin-bottom: 10px;
}

a {
  color: #0066cc;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.iframe-container {
  margin-bottom: 20px;
  border: 1px solid #ccc;
}