**Expected behavior**The SideNav class background color must be applied on the whole sidenave with lots of menu elements when deploying a collapsible element'. **Actual behavior* The SideNav class background color (for instance light-blue-skin) is not applied on the whole sidenave when I put lots of menu elements and deploy a collapsible menu element. ***Resources (screenshots, code snippets etc.)**

Is there a way to apply the class on the whole sideNav when deploying the collaspible menu element, please?