Windows

-Windows
- Click on the figures located under the photos that are
similar to your screen size (800x600 or 1024x768),.
- Wait for the image to appear on the screen
- Once the image is completely loaded, right click it
and "seat as Wallpaper"

Mac
- Click on the figures located under the photos that are similar to your screen size (800x600 ou 1024x768),
- Wait for the image to appear on the screen,
- Once the image is completely loaded,clic on it, pressing the CTRL key at the same time and choose "download the image" or "save the image",
- Save the image under Mac HD / System File /apparence,
- Open the apple menu - Dash board - apparence and get the image...