The click to reveal widget forces a scrolling text box. This text box cannot be scrolled by a keyboard user, because there is no tab index on the box itself. It is also not clear that the text box is scrollable, because the thumb for the scrollbar is hidden until scrolling with the mouse. This box should be responsive on browser zoom and expand vertically to show the text, rather than cut the text off in a scrolling area. If it must do a scrolling area, that scrolling area needs the scroll bar thumb as an indicator, and also needs to be focusable with tab.