body {
  font-family: Arial, sans-serif;
  background: #fafafa;
  color: #222;
  margin: 0;
  padding: 0;
}
header, footer {
  text-align: center;
  background: #fff;
  border-bottom: 2px solid #ddd;
  padding: 1rem 0;
}
nav a {
  margin: 0 1rem;
  color: #d33;
  text-decoration: none;
  font-weight: bold;
}
nav a:hover {
  text-decoration: underline;
}
.container {
  max-width: 900px;
  margin: 2rem auto;
  padding: 1rem;
  background: #fff;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  border-radius: 10px;
  text-align: center;
}
img {
  width: 90%;
  max-width: 800px;
  border: 1px solid #ddd;
  border-radius: 10px;
  margin-top: 1rem;
}
footer {
  border-top: 1px solid #ddd;
  padding: 1rem;
  color: #666;
  font-size: 0.9rem;
}