As explained in the about page of this website:
Stastic is an online website editor used to create a website or edit one you already have. It has never been that easy to create and edit static websites:
- use any Jekyll template - we have a curated list too
- edit the content with a clean attractive online editor, optimized for mobile and tablet
- if you need to customize your website design or features, hand over what you created to a developer or web designer
Read more on the about page wich also has screenshots of Stastic UI.