My multiple rows tabs in FF now appear as a single line instead of multiple rows. Why and how do I fix it?

Look for an updated version of the userChrome.css code you are using for that "multiple rows tabs" feature that you added to Firefox in the past.

https://www.reddit.com/r/FirefoxCSS/

Quick search of that section of Reddit: https://www.reddit.com/search?q=Multi-row+tabs

I have this in my userChrome.css file. The last line of the code below works, the font IS RED. But still the multitabs are in ONE row only. Why? Max

1. PersonalToolbar {

 min-height: 200 !important;
 max-height: 300 !important;

/* text-align: center !important; */ }

1. PersonalToolbar #PlacesToolbarItems {

 overflow-x: visible !important;
 overflow-y: visible !important;
 display: inline-block !important;

}

tab{ -moz-appearance: none !important; } tab[selected="true"] { background-color: black !important; color: red !important; }