For PC Users: Click on the link to the right of the wallpaper that is the same size as your screen. The picture should now load in a new window of your browser. Click on the picture with your right mouse button and a menu will appear. Select the ‘Set as Desktop Background’ option.

 For Mac Users: Click on the link to the right of the wallpaper that is the same size as your screen. The picture should now load in a new window of your browser. 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 (under the apple), choose desktop/screensaver, and look for where you saved the wallpaper, select it and you're good to go!