Overleaf/services/web/public/js/libs/pdfListView/AnnotationsLayer.css

.plv-annotations-layer {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
  pointer-events: none;
}
.plv-annotations-layer > a {
  display: block;
  position: absolute;
  pointer-events: auto;
}