In the prior version, there was an add-on that allowed the bookmarks in the bookmark toolbar to be visible only as an icon, say the Google "G" for example. When you moused over the icon the full title was revealed. This allowed more bookmarks on the toolbar and gave users one click navigation ability, making Firefox very convenient. Quantum has the icon plus the title, and the add-on is of course, incompatible. Please tell me how to customize the buttons. Thank you.