You can choose whether to show the address bar and other browser controls for iOS in the settings for your prototype project.
- Go to your project settings (cog icon in the upper right when viewing a project).
- Set the Mobile browser controls option to "off" to display your iOS prototype in full-screen within the browser.
This functionality is only available for iOS devices and will disable the address bar, back and forward buttons, etc. These sections are typically referred to as the header and footer. For additional details on various aspects of prototyping please review our prototyping tools documentation.