You can change the appearance of a table by applying a different predesigned style to it, changing the table outline, showing or hiding grid lines, and using alternate row colors.
Each template comes with a set of predesigned table styles made to look good with that template. You can apply a different style to a table at any time.
Select the table, tap 
, then tap Table.
Tap a different style.
If you changed the table font, border style, or border color of your table before applying a different table style, the new table might not retain those changes.
Tap the table, tap , then tap Table.
Tap Table Options, then do any of the following:
Show the outline: Turn on Table Outline.
Change the grid lines: Tap Grid Options, then tap to turn on or turn off the grid lines you want to show.
You can change the border and background of any selection of table cells.
Select the cells you want to change.
Tap , tap Cell, then do any of the following:
Change the border: Tap Border Style, then tap the border you want.
Change the background: Tap Fill Color, then tap a color. Swipe left and right for more color options.
Tap the table, tap , then tap Table.
Tap Table Options, then turn on Alternating Rows.
Row colors don’t alternate for header columns. Header columns have their own appearance based on the table style you choose.