Assert the mobile navigation toggle button is (or is not) visible (i.e. whether the viewport is currently at a mobile breakpoint).
Examples
Then the mobile navigation toggle should be visible
And the mobile navigation toggle should be visible
Then the mobile menu toggle should not be visible
Then the mobile navigation toggle button should be visible
And the mobile menu toggle button should be visible
Pattern
Then(/^(?:the )?mobile (?:navigation toggle|menu toggle)(?: button)? should( not)* be visible$/, …)
Part of @webship-js/squarespace-steps (github.com/webship/squarespace-steps), a step pack for Webship-js 2.0.x.