Few styles for Vertical Menu in Wordpress

I created vertical menu using Themler and want few styles for few menus.
I found that each menus have its own id - data-block-id for example data-block-id="vmenuwidget-2" and I try to use own css style but it dont work. My code:

<div class data-responsive-menu data-responsive-levels>
</div> <div class data-block-id>

</div> <div class>

            <h4>First header</h4>
        </div>

...
<div class data-responsive-menu data-responsive-levels>
</div> <div class data-block-id>

</div> <div class>

            <h4>Second Header</h4>
        </div>

....
<div class data-responsive-menu data-responsive-levels>
</div> <div class data-block-id>

</div> <div class>

            <h4>Third Header</h4>
        </div>

...

my css:

.bd-block-10.widget.vmenu#vmenuwidget-2 {

background: #000000;

}
.bd-block-10.widget.vmenu#vmenuwidget-3 {

background: #FFFFFF;

}
.bd-block-10.widget.vmenu#vmenuwidget-4 {

background: #F1F1F1;

}

Please help with this