body {
  font-family: sans-serif;
  background: #f8f8f8;
  padding: 40px;
}

.container {
  background: white;
  padding: 20px;
  border-radius: 12px;
  max-width: 400px;
  margin: auto;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

input, textarea {
  width: 100%;
  padding: 8px;
  margin-top: 4px;
  margin-bottom: 16px;
  border-radius: 6px;
  border: 1px solid #ccc;
}

button {
  padding: 10px 20px;
  background: #3c6e71;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

button:hover {
  background: #2f5d5d;
}

#preview img {
  max-width: 100%;
  margin-top: 10px;
  border-radius: 6px;
}