radare/radare2-webui

.draggable {
  position: absolute;
  cursor: move;
  z-index: 1;
}

.connector {
  background-color: red;
}

.dock_point {
  height: 1px;
  width: 1px;
  overflow: hidden;
  padding: 0px !important;
  border: none !important;
  margin: 0px !important;
  position: absolute;
  font-size: 1px;
  visibility: hidden;
}