body {
  background: white;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  font-family: sans-serif;
}
.box {
  background: #f9f9f9;
  padding: 30px;
  border-radius: 8px;
  text-align: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
input, button {
  padding: 10px;
  margin: 5px;
  border: 1px solid #ccc;
  border-radius: 4px;
}
button {
  background: #007bff;
  color: white;
  cursor: pointer;
}
button:hover {
  background: #0056b3;
}
.error { color: red; margin-top: 10px; }
.gallery img { margin: 10px; border-radius: 8px; }