.igd-container {
  background: #fff;
  padding: 30px;
  border-radius: 10px;
  max-width: 600px;
  margin: 20px auto;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}
.igd-container h2 {
  font-size: 24px;
  margin-bottom: 20px;
}
.igd-container input[type="text"] {
  width: 90%;
  padding: 12px;
  font-size: 16px;
  border: 1px solid #ccc;
  border-radius: 6px;
}
.igd-container button {
  margin-top: 15px;
  padding: 10px 25px;
  font-size: 16px;
  background: #007bff;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}
#output {
  margin-top: 20px;
}