Double-click the title ... to enter the title editing state ... then enter the format ... border and shading ... select the border ... select the horizontal line in the border style ... and confirm.

Then adjust the margins ... file ... page settings ... 2.5cm left and 2.0cm right for confirmation.

Word2003 and word2007 have different interfaces and different specific operations. The above is the operation in 2003.

Adjust borders and shading in 2007. The same is true for adjusting margins under Page Layout.