This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
-webkit-overflow-scrolling controls whether or not touch devices use momentum-based scrolling for the given element.
- Use "regular" scrolling, where the content immediately ceases to scroll when you remove your finger from the touchscreen.
- Use momentum-based scrolling, where the content continues to scroll for a while after finishing the scroll gesture and removing your finger from the touchscreen. The speed and duration of the continued scrolling is proportional to how vigorous the scroll gesture was. Also creates a new stacking context.
Mobile Safari for iOS 5.0+