How to Add and Format Cells Borders in Excel 2016

Apply or remove cell borders on a worksheet
By using predefined border styles, you can quickly add a border around cells or ranges of cells. If predefined cell borders do not meet your needs, you can create a custom border.

Note: Cell borders that you apply appear on printed pages. If you do not use cell borders but want worksheet gridline borders to be visible on printed pages, you can display the gridlines.