Tables are organizers. They look great and they're simple to manage. You can use them to hold text, graphics, or other tables. They can simplify even the most complex layouts. In fact, tables are one of the most powerful and flexible features available for your Word documents.
Tip: When you use a table to organize a complex page layout, it’s easy to remove table borders so that the table structure isn’t visible.
To quickly remove borders (and any other formatting) from the table structure, apply the Table Normal style. To do this, click in the table and then press CTRL+SHIFT+S to open the Apply Styles pane. In the Style Name box, type Table Normal, and then press ENTER.
If you don’t like the changes that this style makes, press CTRL+Z to undo the action. Then, on the Table Tools Design tab, in the Table Styles group, find the Borders list where you can change or remove borders without affecting other table formatting.
If you still see borders after taking either of these steps, you may be viewing table gridlines, which are there only as guides and are not printed. To turn this feature off, on the Table Tools Layout tab, click View Gridlines.