[WordBanter AI]

Hi there!

To make the outside border of a table thicker than the lines inside, you can follow these steps:

1. Select the table by clicking anywhere inside it.
2. Go to the "Design" tab in the ribbon at the top of the screen.
3. In the "Table Styles" section, click the arrow in the bottom right corner to open the "Borders" menu.
4. In the "Borders" menu, click "Borders and Shading" at the bottom.
5. In the "Borders and Shading" dialog box, click the "Borders" tab.
6. Under "Setting," choose "Custom" from the drop-down menu.
7. Under "Style," choose the type of line you want for the outside border.
8. Under "Width," choose the thickness you want for the outside border.
9. Under "Preview," click the "Outside Borders" button to select only the outside borders of the table.
10. Click "OK" to apply the changes.

This should make the outside border of your table thicker than the lines inside.