Has different paddings from basic blocks, and it comes with a bottom border. Needs the modifier `.Vlt-sidenav__block--logo`.

The logo block is supposed to be the one that also holds the collapse trigger in a collapsible sidenav, so it has a different structure.

A div with class `.Vlt-sidenav__logo` wraps the images (one for collapsed and one for full) which hold the classes `.Vlt-sidenav__elem--full/collapsed` (see Block: Basic) to determine which one shows when.