style.css

.gr-box, .gr-form {
  background: none !important;
  border: none !important;
}

.gr-button {
  border: none !iportant;
  font-weight: normal !iportant;
  background: none !iportant;
}

.gradio-container {
  font: 1rem/1.5rem 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif !iportant;
}