Hi there and welcome
This will be caused by Cell Padding. To remove this
Open Microsoft Word.
Open a document that contains a table. To create a table, select "Table," "Insert" and "Insert Table" from the main menu. Select the number of Rows and Columns, and click the "OK" button.
Place the cursor inside the table.
Select "Table" and "Table Properties" from the main menu. This opens the Table Properties dialog box.
Click the "Table" tab at the top of the dialog box.
Click the "Options" button to open the Table Options dialog box.
Locate the "Default Cell Margins" fields. Enter "0" in each of the fields -- top, bottom, left and right.
Click the "OK" button.
This remove the padding and space
If you still have a problem, please let me know