@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");

#navigator-toolbox:not([customizing]) #PersonalToolbar {
  visibility: collapse;
}
#main-window[stylish-url="about:home"] #PersonalToolbar,
#main-window[stylish-url="about:blank"] #PersonalToolbar,
#main-window[stylish-url="about:newtab"] #PersonalToolbar {
  visibility: visible;
}