PrestaShop 1.7 Left or right menu white box style css

[Zohaib-fk]

Hi,

 

PrestaShop 1.7 version has leftmenu with white box style.

 

I have custom module to show data in left menu. I am able to see data in leftmenu but it is not showing in white box like category tree and filter search.

 

I want to see my leftmenu block data in white box like other block.

 

Any idea about css or any change require to achieve this.