WoodMart allows creating a separate menu for mobile view and assigning it in Appearance > Menu. Then you show it by means of the Movile menu element in the header. You can get more details here: https://xtemos.com/docs-topic/adding-menu-to-the-site/
I understand that but actually I want to design the mobile navigation area and place some things in the bottom or maybe I change the background color to image or add some html blocks to mobile navigation area.
You can add any content to the mobile menu by means of Area after the Mobile menu. Using the WOODMART HTML Block widget it is possible to add any custom content to the mobile menu. https://xtemos.com/docs-topic/widgets-and-sidebars/
If you have any questions please feel free to contact us.