Bugzilla

In order to integrate the Colors and Fonts submenus into the existing Reader View menu panel, we will need to build in multilevel navigation. Once you enter a submenu, you must be able to navigate back to the main menu once you've made your selection. We can look into reusable menu components that already have navigation capability, such as the hamburger menu in the browser toolbar that has nested submenus for Account, Bookmarks, History, etc.

To add letter spacing and word spacing controls to the Reader View menu, we want to make them expandable by clicking the chevron for Advanced Layout. We can refer to other areas of the browser that have an accordion layout to guide this effort, such as the More settings option in the Print dialog.