Navs

[StreiffBerenice]

@liyokuna Breadcrumbs : current link should be indicated for example by a colour with a correct contrast between the text and its background, and a visual indicateur like an horizontal line under the link. See the Breadcrumbs component.

[ffoodd]

FWIW, Boostwatch's example for breadcrumbs was obsolete. I updated it in a dedicated commit.

There's still some work aligning with Orange brand's Navigation stencils.