....... thank you very much.
You are missing a "}" character.
I noticed but it doesn't matter anymore, because I'm using the exact css from you, except for image location and color. then changed:
browser.newtabpage.activity-stream.enabled in about:config from true to false like you said and it's working nicely now.
Thanks again, I really do appreciate your help .......
Edit:
I just noticed that my homepage is set to about:newtab, if I change it to about:blank it's like it was before.
On Firefox startup I get a blank page only, not the customized one and my cursor is the hourglass.
Anyway, at least the light colored scrollbar on the about:newtab is gone.
BTW, the browser.newtabpage.activity-stream.enabled isn't shown in about;support, it's only in about:config