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Updating section backgrounds

Learn how to change a section background to a color, image, or video in your B12 website.

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Written by: Madeline B.

Last updated: 08 Oct., 2025

You can customize any section background in the B12 Editor to better match your website’s design. Choose from preset color palettes, upload an image or video, and adjust layout settings like width and height to create the perfect look for your page.

Updating a section background

1. In the left sidebar, go to website Website > pages Pages.

2. Select the page and section that you would like to edit, then scroll to Appearance.

3. Under Section background, choose one of the following options:

  • Section background: Apply one of your preset color palettes — Light, Dark, or Accent.

  • Background media: Upload or select an image from your library, search stock photos, or use AI Assist to use as the section background.

  • Width group: Choose between Fixed or Fluid to control how wide the section appears on your page.

  • Section height: Adjust how tall the section appears by selecting Auto, Full, Half, or Custom.

4. When you’re done customizing, click Publish in the upper-right corner to save your changes and update your live website.