Enable Wallpapers
Wallpaper appears in the back of certain default browser tabs. To enable and customize this feature:
Appearance Customizations
Opera allows other ways to change its appearance:
Turn on the Enable dark theme or Show bookmarks bar toggle switches.Select the Font size drop-down menu to change the font size of the application.Select Customize fonts to change the fonts the browser uses. Choose from a standard system font as well as options for serif, sans-serif, and fixed-width fonts, as websites specify.Select the Page zoom drop-down arrow to adjust the page magnification.Tell Opera to highlight links and form fields when you press Tab.
Sidebar Customization
The sidebar on the left edge of the browser includes a handful of stock elements. Use the toggle switches to show or hide the sidebar and elements and to show or hide notification badges for each of those elements.
