Chrome DevTools: Here are three tricks you can use in the Elements Panel DOM tree
Last updated: August 9, 2016 
                Three quick tricks for the DOM tree in the Elements Panel:
- When you are editing the DOM as HTML (Right click > 'Edit as HTML'), use the shortcut - Shift + Tabto auto-indent the markup. Works on single lines or multi-lines.
- Get the corresponding CSS selector for a DOM node: Right click > - copy>- copy selector.
- Rearrange the DOM with a drag-and-drop action in the DOM tree. Useful for quick prototyping of alternative layouts.