mdai-vss

I noticed these two are different with `VaDivider` having `--va-divider-margin: 0.5rem` as shown above, while `VaSeparator` looks like this:  So I wonder which was originally the intended visual effect....

> ### Description > > For this component: https://cloudscape.design/components/top-navigation It would be nice if it resembles the aws console top nav as it is more compact and creates more space...