My display of Thunderbird is overrsized in width, probably not significantly but enough that I am missing text. Normally this is not a major concern but I was checking out a rule applied to incoming mail and could see features to the right. I am using W11 operating system on an HP Spectre. I checked the Config Editor in settings and "layout.css.devPixelsPerPx" is not bold and is set at -1. How can reduced the width of the display? Regards Mike