2. After selection, right-click and select Set Cell Format, as shown in the following figure:
3. Click the border option, as shown in the figure below:
4. Select the outer border, select the required line style and confirm, as shown in the following figure:
5. Select the first row in the table, as shown in the following figure:
6. Click the merge center above, as shown in the figure below:
7. Enter data in the form, and a form is ready, as shown in the following figure: