body {
  font-family: Arial, sans-serif;
  margin: 20px;
}

#scanner {
  width: 100%;
  max-width: 500px;
  height: 300px;
  border: 2px solid #ccc;
  margin-top: 20px;
  position: relative;
}

.controls button {
  margin-right: 10px;
  padding: 10px;
}

.result {
  margin-top: 20px;
  background: #f5f5f5;
  padding: 10px;
}