message: shrink SideNav box
diff: @@ -5,7 +5,8 @@ import {Box} from '../../src'
  export default function SideNav({basename, title, examples, ...rest}) {
  return (
  - <Box is="nav" className="menu" {...rest}>
  + <Box {...rest}>
  + <nav className="menu">
  <NavLink to={basename} className="menu-heading no-underline link-gray-dark">
  {title}
  </NavLink>
  @@ -19,6 +20,7 @@ export default function SideNav({basename, title, examples, ...rest}) {
  {example.name}
  </NavLink>
  ))}
  + </nav>
  </Box>
  )
  }
  