How can I set a video background in Webflow that fills the screen vertically for all devices (desktop, tablet, mobile)?

Setting a video background in Webflow to fill the screen vertically across all devices requires specific adjustments. Here's how you can achieve this:

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1. Add a Video Background

• Drag and drop a Video Background element from the Add (A) panel onto your page.
• Select the video file you wish to use as a background.

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2. Set Video to Cover the Screen

• Select the Video Background element on the canvas.
• In the Style panel, set the Width and Height to 100% to ensure the video covers the entire viewport.
• Ensure the position is set to Absolute or Fixed to keep it fixed relative to the screen.

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3. Adjust For Different Devices

• Use Webflow's device preview to switch between Desktop, Tablet, and Mobile views.
• Adjust the Width and Height settings individually for any device if necessary to maintain the vertical fill.
• Ensure any important content remains visible and unobstructed by adjusting the z-index if needed.

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4. Add Custom Code (if required)

• If the video is not covering fully due to device-specific limitations, consider applying custom CSS for tweaks.
• Use the site's custom code settings to add small CSS rules for adjustments, avoiding inline styles.

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5. Optimize Video Performance

• Compress the video to reduce load times across various devices.
• Consider using loading="lazy" to defer the loading of off-screen videos until needed.

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Summary

To ensure a video background fills the screen vertically on all devices in Webflow, adjust the video settings to cover the viewport, optimize it for performance, and confirm that it looks good across device previews, making use of custom CSS if needed.