/**
 * The dnd-list should always have a min-height,
 * otherwise you can't drop to it once it's empty
 */
ul[dnd-list] {
    min-height: 42px;
    padding-left: 0px;
}

    /**
 * The dndDraggingSource class will be applied to
 * the source element of a drag operation. It makes
 * sense to hide it to give the user the feeling
 * that he's actually moving it.
 */
    ul[dnd-list] .dndDraggingSource {
        display: none;
    }

    /**
 * An element with .dndPlaceholder class will be
 * added to the dnd-list while the user is dragging
 * over it.
 */
    ul[dnd-list] .dndPlaceholder {
        background-color: #ddd;
        display: block;
        min-height: 42px;
    }

        /**
 * Show selected elements in green
        ul[dnd-list] li.selected {
            background-color: #dff0d8;
            color: #3c763d;
        }*/