Applying cell borders

In Design mode, right-click the cell or cells to format and select Format Cells.

Click the Border tab.

You can apply a border to the edges of a cell, in different styles and colors. Select one of the preset border styles in the Default field or click border lines in the Border field to apply them. Select a border style from the Style field and a color from the Color palette.
Note:  Only those border styles which are supported by HTML (solid, dotted, dashed) can be rendered.