Note Design templates you have applied appear in the Slide Design task pane under Used in this presentation. All available design templates appear under Available for use.
Tips
To view the design templates in larger sizes, point to a template, click the arrow, and then click Show Large Previews.
To look for a template that doesn't appear in the task pane, click Browse at the bottom of the task pane.
To apply a "blank" design template, under Available for use, click the first design in the task pane, titled Default Design.