There are a number of ways to open Opera Dragonfly:
Shortcut:
- Mac: CMD+alt+I
- Win/Linux: ctrl+shift+I
Menu item:
- Mac: Tools → Advanced → Opera Dragonfly
- Win/Linux: Click on the Opera menu in the upper-left-hand corner of the Opera browser interface and select Page → Developer Tools → Opera Dragonfly
Open Dragonfly with the element you want to inspect in focus:
- Right click, select Inspect Element.
For more information - documentation.