/**
    * 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;
    }

    ul[dnd-list] li {
        background-color: #fff;
        border: 1px solid #ddd;
        border-top-right-radius: 4px;
        border-top-left-radius: 4px;
        display: block;
        padding: 10px 15px;
        margin-bottom: -1px;
    }

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