How to add class to second main div element using jquery : I have the following html in my page
   

    <td id="tdCase" colspan="4" rowspan="2">
        <div style="width: 100px;" unselectable="on">
            <div style="overflow: hidden; width: 100%; border: 1px solid rgb(204, 204, 204); background-color: rgb(239, 239, 239);" class=" nicEdit-panelContain" unselectable="on">              
            </div>
            <div>
            </div>
        </div>
        <div style="width: 100px; border-color: currentcolor rgb(204, 204, 204) rgb(204, 204, 204); border-style: none solid solid; border-width: 0px 1px 1px; border-image: none 100% / 1 / 0 stretch; overflow-y: auto; overflow-x: hidden;">        
            <div>
                <div>

                </div>
            </div>
        </div>       
    </td>

in my td element i have 2 main div elements and those two main div elements have some inner elements.
Here i want to add a class to my second div element using jquery, Can any help how to do that

Thanks in advance,
Srinivas.[![enter image description here][1]][1]


  [1]: https://i.stack.imgur.com/Sap9S.png