Timeline: Improve keyboard accessibility

Description

Background

Timeline slider is inaccessible for screen reader users.

Acceptance Criteria

1. Hide content that is not visible so you cannot tab to it. (remove tabindex?)
2. Add tabindex to next/prev buttons.
2. Add keyboard controls to enable sliding.

Acceptance Criteria

None

Status

Assignee

Unassigned

Reporter

Frode Petterson

Funding

None

Code reviewer

None

Released

None

Time tracking

16h

Priority

Medium
Configure