Cindr Blocs have two widths toggled on a Bloc by Bloc basis. When you have a site with Blocs set to their narrow state, it’s possible to see a background image or background color for the current page you are on.
To achieve this, click “Bloc Library” link in the side menu, then “Background Options”.
Images can be uploaded direct from your device, or you can use a solid color.
Note for mobile users:
A site's background is only really noticed when the website is viewed on a device with a large screen. Since you won't be able to actually see a Bloc's width changing we have removed this option from our mobile interface. If you wish to change the width of your Blocs for large screens, please edit your website on a large screen device, such as a laptop.