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

.container {
  max-width: 400px;
  margin: auto;
  padding: 20px;
  text-align: center;
}

h2 {
  margin-bottom: 20px;
  color: #333;
}

.scanner-box {
  margin-bottom: 20px;
  border: 2px solid #ccc;
  padding: 10px;
  border-radius: 10px;
  background: white;
}

.result-box {
  padding: 15px;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

button {
  margin: 5px;
  padding: 10px 20px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

button.enter {
  background-color: #4CAF50;
  color: white;
}

button.cancel {
  background-color: #f44336;
  color: white;
}