Download Custom Icons for your browser from Vivaldi Themes.
Tag: toolbar
Tip #267
Press Ctrl + F11 / ⌘ F10 to hide Vivaldi Browser's user interface.
Tip #260
Use spaces and separators to create different sections on the toolbars.
Tip #226
Reset toolbar customizations to start from fresh.
Tip #126
Enable "Always Show Controls" to keep toolbars visible on Vivaldi for Android.
Tip #102
Customize browser toolbars from Vivaldi menu > View > Customize Toolbar.
Tip #4
Hold down the Ctrl / ⌘ key to change the location of buttons in the browser's user interface.