I'm creating a sidebar component using Material UI Drawer component.
I want to create components from the sidebar that sticks side by side to the sidebar component like this green box in the image below.
I tried to figure out the code but get something like this image below.
As we can see the sidebar component looks like it's located below the content page (that's why the orange boxes are cropped). Also, the sidebar component displays the horizontal scroll bar.
Here is the code: https://codesandbox.io/s/custom-sidebar-material-ui-4c05j
In this case, what I want is to create orange boxes that appear above all components (look like the first image above).

