To make one of these images your desktop wallpaper, click on the image of your choice.
Once the image has finished loading, follow the instructions below for either Windows or Mac.

Windows

Right click over image for drop down menu. Then, select "Set As Wallpaper" or "Set As Background."

Mac

Right click over image for drop down menu. Then, select "Set As Desktop Background" or "Save Image As."
Note: If you select "Save Image As," you will need to go to System Preferences/Desktop & Screen Saver to set the image as your desktop wallpaper.