My personal enhancement: Centered bookmarks bar

[Cinabutts]

- #PersonalToolbar {
-     background-color: var(--color-navbar-bg) !important;
    color: var(--color-text) !important;
+     display: flex !important;
+     justify-content: center !important;
  }

+ #PersonalToolbar #PlacesToolbarItems {
+     display: flex !important;
+     justify-content: center !important;
+     flex-grow: 1 !important;
+ }