body {
  font-family: Arial, sans-serif;
  text-align: center;
  padding: 2rem;
}

.hidden {
  display: none;
}

#unsupported {
  color: red;
  padding: 1rem;
  border: 1px solid red;
}
#installBtn {
  padding: 0.8rem 1.5rem;
  background: #007bff;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  margin: 1rem 0;
}

#installBtn:hover {
  background: #0056b3;
}