Setting up Custom Image or Background on each post/page

In optimizer, you can set different image background or color for each post and page. To set this follow below steps:

1. Go to Dashboard -> Posts / Pages
2. Select the post or page you want to set the background
3. At the bottom of the post editor, there is a box named Optimizer Options
4. Select the Custom Background tab
5. If you want to set an image as a background Click Upload to upload your desired background image or set color if you want to set color background
6. You can customize the position of your image by configuring below options:

Background Repeat
Background Size
Background Attachment
Background Position