Styles look funky for params on seed-element

[bmcorser]

When following the docs to generate a component page for seed-element, the styles seem to fall apart.

I can fix by changing a margin defined in iron-component-page (shown in dodgy gif video below), but I don't see the issue on the official seed-element component page. The issue can be seen live on the component page of my clone of seed-element.

Chrome

Firefox

[notwaldorf]

I think the docs styles have changed since this was opened (I don't see any grey anywhere on the docs anymore)