In Firefox Developer Tools Inspector, you can select multiple DOM nodes using one of these methods:

1. Hold Ctrl (or Cmd on macOS) and click

• Click on the first node in the Inspector panel.
• Hold Ctrl (Windows/Linux) or Cmd (macOS) and click on additional nodes to add them to your selection.

2. Use the Ctrl+Shift+C (or Cmd+Shift+C on macOS) shortcut

• This toggles the "Inspect Element" mode, allowing you to click and select multiple nodes while holding Ctrl/Cmd.

3. Select via the Console

• Use document.querySelectorAll() in the Console to select multiple nodes matching a CSS selector:

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  document.querySelectorAll("div, p");

• This returns a NodeList of all matching elements.

Note: Firefox does not support multi-select in the Inspector for editing (e.g., bulk styling), but you can inspect and debug multiple nodes simultaneously.