Vertical menus are styled in the Design area, under Design > Menus > Vertical Menu.

Vertical menus are often used within Left or Right Column sections. They can be styled globally within this section of the site and brought in with a component to the desired section. 

Alternatively, vertical menus can be used as the predominant way of navigating a website, instead of using a horizontal navigation. 

The editor is shown below:

As seen above, each menu editor has the "Edit Raw Data" feature, enabling you to quickly copy menu styling from one KhooSeller website to another should you so need to.

Caution: We do not recommend changing anything unless you know exactly what you're doing. This part is usually completed by your designer.

After you have finished editing click "Save Changes".