The polyfill we use for details/summary only renders the arrow if the
browser doesn’t natively support the feature.
The latest versions of Firefox _do_ now support the feature (after 5
years), but for some reason they don’t draw the arrow. So this commit
forces the arrow to be polyfilled in all browsers, and hides the browser
default one, for those browsers that do render it.
The details element is fairly new. It doesn’t work in all browsers,
and isn’t keyboard/screenreader accessible even in some new browsers.
This commit adds the Polyfill script from GOV.UK elements[1] which
polyfills these features for browsers that don’t support them.
1. http://govuk-elements.herokuapp.com/typography/#typography-hidden-text
This commit moves user-related navigation into the proposition header (the black
bar) at the top of the site. It adds some custom SASS to override GOV.UK
template and align these navigation items to the right (because it looks
better).
It then removes the service chooser dropdown (and its associated SASS and JS) in
favour of a link alongside the user-related navigation items. ‘Switch service’
is the best language for this that we’ve come up with so far.
This means that the only way of adding a new service is from the `/services`
page. So this commit removes the redirect if you land on this page with only one
service (else it would prevent you from ever being able to add more).
The previous service switcher was built purely in Javascript, which meant that,
for the purposes of progressive enhancement, it had to load in the open state.
Setting it to the closed state with Javascript happened a fraction of a second
after page load. This caused an unpleasant flicker as the whole page shifted up
and down as it loaded.
This commit changes the switcher to use the native HTML5 `details` and
`summary` elements[1].
This commit adds a polyfill from GOV.UK Elements for browsers which don’t
support `details`/`summary`.
1. http://html5doctor.com/the-details-and-summary-elements/
