preview.webm Features Autohide bookmarks toolbar Vertical tabbar Centered url Gap and rounded browser side like Arc browser How to install Open about:config Search toolkit.legacyUserProfileCustomizations.stylesheets and set it to true Open about:profiles Look for Default profile: yes and open the root directory Copy chrome folder to root directory Install Sidebery extension Open Sidebery Settings --> Styles editor Copy sidebery.css content and paste it to Styles editor