How can I put the background video in Webflow behind everything? Why don't I get 4 cells when I create 4 columns in my quick stack in Webflow?

TL;DR

Set background video to Absolute or Fixed with z-index 0 or -1, and place inside a relatively positioned parent to stay behind content.
In Quick Stack, manually add or duplicate items to fill all cells, as it doesn't auto-populate based on column count.

You're facing two issues in Webflow: (1) placing a background video behind all content, and (2) Quick Stack not showing four cells when using four columns.

1. Make Background Video Appear Behind Everything

To ensure your background video stays behind all other content, you need to adjust z-index and position settings:

Select the Background Video element.
Set Position to Absolute or Fixed (depending on whether it should scroll).
Set Top/Left/Right/Bottom to 0 to cover the full container or viewport.
Set Z-index to a low value, like 0 or a negative number (e.g., -1).
Ensure the parent container has Relative or Static positioning — Absolute positioning requires a context.
To make it truly a background, you can also place it inside a div block behind your main content.

2. Quick Stack Only Shows Fewer Than 4 Cells

If you select 4 columns in a Quick Stack but don't see 4 cells:

Quick Stack only reveals the number of items you drag into it — it's not a layout preview.
Creating a 4-column layout in Quick Stack will show 1 cell by default.
You need to manually duplicate the first cell or drag elements (like divs) into other cells for them to appear.
Alternatively, use Grid or Flexbox if you need more precise control.

Summary

Set your background video to Absolute or Fixed position with a low z-index, and ensure it's inside a relatively-positioned parent. For Quick Stack, manually add child elements or duplicate existing cells to fully populate your grid.

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