To customize your keyboard shortcuts:
@rif Go to Settings [ opera://settings/keyboardShortcuts ]
Opera settings allows you to customize browsing actions to your own keyboard combinations.
Click Advanced in the left sidebar, and click Browser.
Under Shortcuts, click Configure shortcuts.
Hover your mouse over a command, and click Type a shortcut.
You can then enter / type your new shortcut combination.
For example: Ctrl+Shift+T