body {
  font-family: Arial, sans-serif;
  background: #f0f2f5;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 500px;
  margin: 40px auto;
  background: #fff;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

h1 {
  text-align: center;
  color: #333;
}

label {
  display: block;
  margin-top: 15px;
  font-weight: bold;
}

input, textarea, select, button {
  width: 100%;
  padding: 10px;
  margin-top: 5px;
  box-sizing: border-box;
}

button {
  background-color: #28a745;
  color: #fff;
  border: none;
  margin-top: 15px;
  cursor: pointer;
  border-radius: 5px;
}

button:hover {
  background-color: #218838;
}

.payment-methods {
  margin-top: 10px;
}

#qrBox {
  display: block;
  text-align: center;
  margin-top: 20px;
}

#qrBox img {
  width: 200px;
  margin-top: 10px;
}