General help

Hi, I wrote a few drag and drop questions and they have been working fine on PCs and 7"+ tablets but not quite well on small screen devices such as phones. When the same question was attempted on a small screen device, attempting to drag a draggable item (be it with my finger tip or stylus) onto the drop area will see the background image and the droppable area moving at the same time. This problem will make the draggable item next to impossible to reach the droppable area as they are just moving at the same time ! Please help.