1, open PowerPoint2013, insert a rounded rectangle, as shown in the following figure.
2, after inserting the rounded rectangle, copy and paste, row into a 4*4 matrix, set the color to black.
3. Change the line frame thickness to 3 lbs.
4. Continue inserting a rectangle, resizing, and covering the previous matrix. and set the large rectangle to black.
5, right click on the outer side of the rectangle, from the right-click menu to choose to put on the ground floor.
6, CTRL + A Select all, right click to combine these graphs.
7, will be the combination of graphics cut, selective paste, from the pop-up interface to select PNG pictures, OK.
8, select the picture, in the Format tab, click the Color options, set the transparent color.
9, insert a picture from the local, adjust good size position, right click, put on the ground floor.
10, finished, we will insert the picture of the puzzle to deal with the effect.