How can I stretch a body background image in Webflow to fill the entire screen without preserving its aspect ratio?

To stretch a body background image in Webflow to fill the entire screen without preserving its aspect ratio, you can use CSS background-size property and set it to "cover". Here's a step-by-step guide on how to achieve this:

1. Select the body element in the Webflow Designer by clicking on the body tag in the Navigator panel or directly on the canvas.
2. In the Styles panel on the right-hand side, click on the Background Image property to open the image uploader.
3. Upload or select the desired background image for your body element.
4. Once the image is added, you'll notice a "More Options" button below the image thumbnail in the Background Image property.
5. Click on the "More Options" button to reveal additional settings.
6. Locate and click on the "pin" icon next to "Background Image" to set the background position.
7. In the "Section" dropdown, select "Body" to apply the background image to the entire body element.
8. Now, click on the field next to "Background Image" and enter the following custom code:
   ```
   background-size: cover;
   ```
   This CSS property instructs the browser to scale the background image as much as possible to cover the entire container without preserving its aspect ratio.
9. Press Enter or click on any other field to save the changes.

By using the "cover" value for the background-size property, the background image will stretch to fill the entire body element, ensuring it covers the screen without caring about the image's original aspect ratio. Make sure your background image has sufficient dimensions to cover various screen sizes without loss in quality.

Remember to preview and test your website's responsiveness across different devices to ensure the background image displays correctly on all screen sizes.