Give screenreader users context on what this particular sidenav is for.

These styles are included automatically in the nav container:

[ flexBasis (px 250)
, flexShrink (num 0)
, borderRadius (px 8)
, backgroundColor Colors.gray96
, padding (px 20)
, marginRight (px 20)
]

Use entry to create a sidebar entry.

Use this helper to add custom attributes.

Do NOT use this helper to add css styles, as they may not be applied the way you want/expect if underlying Button styles change. Instead, please use the css helper.

Use this link for routing within a single page app.

This will make a normal <a> tag, but change the Events.onClick behavior to avoid reloading the page.

See https://github.com/elm-lang/html/issues/110 for details on this implementation.