1. Select the text with background, click "Borders" in the menu bar above, and click "Borders and Shading" at the bottom of the pop-up menu.

2. Click Shading in the pop-up window, click the small arrow under Fill and select No Color, then click the small arrow after Style under Fill and select Clear; Finally, click the small arrow under "Apply to" on the right, select "Select Text", and click "OK" at the bottom.