1, open our word document, and then find a suitable position on the cover of the document, and then you can start setting the short horizontal line of the cover.

2. The steps for 2.word to align the cover underline are as follows: Step 1: Select the view in the top bar. Step 2: Point out the ruler tool. Step 3: As shown in the figure, the ruler point on the left is the default area boundary on the left of the document, and the ruler point on the right is the default area boundary on the right of the document.

3. Open the Word document and click View on the toolbar to switch to the viewing interface. Click "ruler" to bring up the ruler. At this time, you can see that there is an extra ruler on the left and right sides of the text editing area.

4. You can use the method of "table+border" to align the underlined content of the paper cover. The specific operation is as follows: You need to use the table function here, select Insert-Table in the menu bar, and select the number of rows and columns (6 columns *2 rows) according to the cover content.