thead, tr, th all sticky

Left TH	Right TH
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell

thead, tr sticky

Left TH	Right TH
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell

thead, sticky

Left TH	Right TH
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell

thead, th sticky

Left TH	Right TH
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell

tr, th sticky

Left TH	Right TH
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell

tr sticky

Left TH	Right TH
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell

th sticky

Left TH	Right TH
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell
Cell	Cell