body {
  font-family: sans-serif;
  text-align: center;
  padding: 40px;
  background: #f9f9f9;
}
img {
  max-width: 100%;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
footer {
  margin-top: 40px;
  font-size: 14px;
  color: #888;
}