Why Doesn't Position:fixed Work on iOS Devices, and How Can I Fix It?

Resolving Fixed Positioning Issues on iOS Devices

Q: "position: fixed doesn't work on iPad and iPhone"

For an extended period, developers have faced difficulties implementing fixed positioning on iPads. The inability of fixed positioned elements to adjust when users scroll up or down in mobile Safari on iOS devices complicates the situation.

A: Understanding Mobile Browser Limitations

Mobile browsers often intentionally disable the "position: fixed" attribute to prevent fixed elements from obstructing the content on smaller screens. Quirksmode.org provides a detailed explanation of this limitation: https://www.quirksmode.org/blog/archives/2010/12/the_fifth_posit.html.

Browser Compatibility

For a comprehensive compatibility list, refer to the following resource: https://www.quirksmode.org/m/css.html. However, keep in mind that the mobile browser landscape is constantly evolving, so compatibility information may quickly become outdated.

Updates and Support

iOS 5 and Android 4 reportedly introduced support for "position: fixed." Testing on iOS 5 on an iPad has confirmed its functionality, although issues arise with zooming in and panning while using a fixed element.

For a more current and comprehensive compatibility table, consult CanIUse: https://caniuse.com/#search=fixed. It offers up-to-date information on Android, Opera (mini and mobile), and iOS.

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