For those who use the Bookmarks Toolbar, especially if in multiple lines, the following code is really useful to get the toolbar out of the way when not needed.
I use this together with the Extension Autohide
I came across this code here
@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
/* Auto-hide bookmarks toolbar */
#PersonalToolbar
{
visibility: collapse !important;
}
#navigator-toolbox:hover > #PersonalToolbar
{
visibility: visible !important;
}
Mmmm...
After all that I have discovered that there is a Firefox Extension which does the same thing..
Please see here
Many thanks