div disappear while dragging elements

Trying to create a draggable div, When click and drag the dropdown `div` css it should be hidden. When dragging finished `div` css should be shown again.Is there any way I can achieve this using CSS?

On drag click this className `st-drag-icon` should be called.

code: https://codesandbox.io/s/zen-cerf-cwfgl (some error on code compile)

Start with the linked CodeSandbox and the `st-drag-icon` class; first reproduce the compile error and the dropdown disappearance during dragging. Define completion as the dropdown CSS being hidden only while dragging and shown again when dragging finishes.

Written by the indexing model from the issue text.