Enclose your text boxes, images, movies, shapes, and media placeholders with graphical borders, known as picture frames.
Select the media or media placeholder, click Inspector in the toolbar, and then click the Graphic inspector button.
Choose Picture Frame from the Stroke pop-up menu, and then click the thumbnail to choose one.
To adjust the thickness of your frame, use the Scale slider or type a specific percentage in the adjacent field. (Not all picture frames can be adjusted.)
Select a framed object or media placeholder, click Inspector in the toolbar, and then click the Graphic inspector button.
Choose Picture Frame from the Stroke pop-up menu, and then click the arrow next to the thumbnail to choose a new picture frame.
Select the media or media placeholder and then choose a line style (or None) from the Stroke pop-up menu.