- Enable the Script panel
- Reload the page
- Inspect the
<label>
element containingSome Text?
- Right-click the element and choose Break On Child Addition or Removal from the context menu
- Move the mouse over the question mark => The script execution will stop and you'll see a hint showing you the tooltip element.
- Press the Step Over button () or press F10 once, so the element is added to the DOM
- Switch to the HTML panel
=> There you'll see the <div>
containing the tooltip and you'll be able to check its styles.