To Download Wallpaper:
For PC Users: Click on the link below the wallpaper that is the same size as your screen. Right click on the image. Select ‘Save Image As...’. Open Display in Control Panel.
On the Desktop tab click 'Browse' to search for the downloaded wallpaper.
For Mac Users: Click on the link below the wallpaper that is the same size as your screen. Hold “control” + click on the image, and select "Set As Desktop Background". If this option is not available, hold “control” + click on the image, and select "Save" from the popup menu and save the image to your hard drive. Access your system preferences, choose desktop/screensaver, and search for the downloaded wallpaper..