Vivaldi has a minimalistic user interface with basic icons and fonts, and a color scheme that changes based on the background and design of the web page being visited.[15] The browser also allows users to customize the appearance of UI elements such as background color, overall theme, address bar and tab positioning, and start pages.[16] According to CEO Jon von Tetzchner, Vivaldi's vast, unique customizability is a huge part of how the browser caters to power users.[17]