How to detect the boundary of the collection of current being dragged row?

[zhaoyao91]

we have a draggable list composed of multiple collections. when dragging a row into another collection, it will be sorted to the most top or bottom position, but we hope it retain the old position. how can we implement this with react-sortable-hoc?

[NemoZhong]

give the container a style overflow: auto; can solve the problem