Try the . . . >> Split Browser add-on which once installed, puts a 'Split' tab in the Menu Bar which allows you to have say the tabs which you have showing in your Tab Bar to be 'Tiled' all together on your screen so you can see each wep page at once. You can also resize each 'Tile' by pulling the sides about with your cursor.
It does have options to change preferences via Tools > Add-ons > Split Browser.
Have fun . . . . but don't lose to much money on the horses