        document
          .querySelectorAll("div.drag-source, div.drop-target")
          .forEach((el) => (el.contentEditable = true));

        // Setup input event listeners
        setupDropTarget(
          document.getElementById("div-target1"),
          "Div to ContentEditable Div",
          true
        );
        setupDropTarget(
          document.getElementById("textarea-target1"),
          "Div to Textarea",
          false
        );
        setupDropTarget(
          document.getElementByI