.b-overlay {
  display: none;
  pointer-events: none;
  z-index: 500;
  width: 100%;
  height: 100%;
  position: fixed;
  top: 0;
  left: 0;
  margin: 0;
  padding: 0;
  overflow: auto;
}

.b-overlay.is-visible {
  display: flex;
  pointer-events: all;
  cursor: pointer;
}