Is expandable banner self-contained?

[tomyems]

I believe the expandable banner might not be self-contained.

There's isn't the triangle on the left of the banner expandable banner styling

The triangle on the left of the banner comes from the Details component from NotGov.

This means that you can't just take the expandable banner styling with the HTML snippet from the expandable banner component page.

[daniel-ac-martin]

Hi @tomyems.
I'm pretty sure that it doesn't use the styling from <Details>.
Are you just confused because you can't find the styling for the triangle in the SCSS code?

I'm fairly sure that's an HTML5 thing. i.e. It comes from the browser.
(I can't see it in govuk-frontend either: https://github.com/alphagov/govuk-frontend/blob/main/src/govuk/components/details/_index.scss ) (Update: It's here: https://github.com/alphagov/govuk-frontend/blob/main/src/govuk/components/details/_index.scss#L66 )

Are you encountering a particular problem? Can you share a screenshot?

[daniel-ac-martin]

Oh the NotGovUK component, does override the default <details>.
Possibly, that is the issue.

In that case, we might need to add some more code into ExpandableBanner.scss.

[daniel-ac-martin]

(Basically, you are right, leave it with me.)