.pptmui-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 99;
  background-color: rgba(0, 0, 0, 0.7);
  display: none;
}
.pptmui-overlay--visible {
  display: block;
}