What could be the reason for the layout issues and text display problems on Mac and iOS devices when my website, designed using Webflow, is working properly on Windows and Android?

Layout issues and text display problems on Mac and iOS devices are usually caused by differences in rendering engines, font support, or default browser behaviors on Safari (Apple devices) compared to Chrome or other browsers on Windows/Android.

1. Font Rendering Differences in Safari

• Web fonts may render differently due to Safari not fully supporting all font formats (e.g., .woff vs. .woff2).
• Custom fonts not loading properly may fall back to system fonts; if those have different sizing or metrics, it can break layouts.
• Make sure your custom font files are uploaded correctly in Webflow and check if they’re compatible with iOS/macOS.

2. Missing Vendor Prefixes or Unsupported CSS

• Safari, especially mobile Safari, may require vendor prefixes for some advanced CSS properties (e.g., flex, transform, backdrop-filter).
• Webflow usually handles this, but custom code or integrations might not.
• Avoid relying on bleeding-edge CSS features unless you’ve verified cross-browser compatibility.

3. iOS Viewport Scaling and Zoom Behavior

• iOS has unique behavior when it comes to viewport scaling, especially in landscape mode or when inputs are focused.
• Without a proper viewport meta tag, some elements may zoom or shift unexpectedly.
• Verify you’re using the correct viewport settings provided by Webflow (<meta name="viewport" content="width=device-width, initial-scale=1"> is added by default in Webflow).

4. Flex/Grid Layout Rendering Differences

• Safari has known rendering quirks with flexbox and grid layouts, especially involving min-height, overflow, or auto margins.
• Areas to check include:
• Elements with auto height inside flex containers
• Items with percentage heights where parents don't have a fixed height
• Use of negative margins, which Safari may interpret differently

5. iOS Subpixel Rendering

• Safari on iOS may render fonts and line heights slightly differently due to subpixel rendering, leading to visual or overflow issues.
• Avoid relying on exact text heights for layout alignment. Instead, use padding and flexbox for distance control.
• Manually adjust line height or letter spacing for better consistency.

6. Touch-Related Behavior and Overflow

• On iOS, long text or containers may clip prematurely if overflow is set to hidden without scroll handling.
• This is particularly critical for modals or horizontally scrollable elements.
• Test all interactive areas for touch responsiveness and layout stability.

7. Media Queries Not Targeting iOS Correctly

• Some layout rules may rely on media queries that don’t trigger correctly due to device pixel ratio disparities.
• Use media query breakpoints that are broadly compatible like max-width: 767px instead of targeting specific devices.

Summary

Layout and text issues on Mac/iOS are often due to Safari-specific rendering quirks, font handling differences, or improper use of flex layouts and viewport scaling. Carefully test each component on Safari devices and adjust typography and layout rules as needed for better cross-platform consistency.