Pre-build page templates including master templates, content templates, product templates and more. Visual Page Builder with a front-end, drag and drop user interface. The user interface provides access to component library and real-time responsive preview. | Smart Components that intelligently adjust to brand standards, accessibility, and simplify the site creation process for non-technical users. | Roles and Permissions that are available at the component level, page level and sub-page level (helpers) empowering multi-experience creation. https://www.acquia.com/products/drupal-cloud/site-studio https://github.com/acquia/cohesion https://sitestudiodocs.acquia.com/6.7/user-guide/site-studio-uikit

GitHub Link: 
https://github.com/backdrop/backdrop-issues/issues/5403
GitHub Issue #: 
5403