Assert the content of a tab is, or is not, shown: its .w-tab-pane has w--tab-active and is displayed.
Examples
Then the "Monthly" tab content should be visible
Then the "Custom Project" tab content should not be visible
And the "Overview" tab content should be visible
Then the "Reviews" tab content should not be visible
And the "Specifications" tab content should be visible
Pattern
Then(/^the "([^"]*)" tab content should( not)* be visible$/, …)
Part of @webship-js/webflow-steps (github.com/webship/webflow-steps), a step pack for Webship-js 2.0.x.