To prevent horizontal scroll bars and white space from appearing on a webpage longer than the vertical height when using 100vw in Webflow, you can try the following steps:
1. Check the width of your sections: Make sure that the width of your sections is not set to a fixed value larger than the viewport width (100vw). If your sections are wider than the viewport, it will trigger horizontal scrolling. You can adjust the width of your sections to be equal to or less than the viewport width.
2. Avoid using padding, margins, and borders: Padding, margins, and borders can add to the overall width of an element and contribute to exceeding the viewport width. Keep an eye on the total width of your elements, including any padding, margins, or borders. Consider reducing these values if necessary.
3. Use the overflow property: By default, Webflow sets the overflow property of the body element to "auto" to allow for vertical scrolling. However, if you want to prevent horizontal scrolling, you can set the overflow property of the body element to "hidden". This will hide any content that exceeds the viewport width, effectively preventing horizontal scroll bars.
4. Test and adjust: It's important to test your website on different devices and screen sizes to ensure that it looks and behaves as expected. Use Webflow's responsive design tools to make adjustments and optimize the layout for various screen sizes.
5. Consider using a container element: Wrapping your content within a container element can help control the width and prevent undesired horizontal scrolling. Set the width of the container element to be equal to or less than 100vw, and ensure that any content within the container is properly contained within it.
By following these steps, you should be able to prevent horizontal scroll bars and white space from appearing on a webpage longer than the vertical height when using 100vw in Webflow.