Fractal is a tool to help you build and document web component libraries, and then integrate them into your projects. Component (or pattern) libraries are a way of designing and building websites in a modular fashion, breaking up the UI into small, reusable chunks that can then later be assembled in a variety of ways to build anything from larger components right up to whole pages. Fractal helps you assemble, preview and document website component libraries, and then integrate them into your web sites, apps and build processes to create joined up, ‘living’ projects. Fractal can be run from the command line or integrated into your project via its API.
If there's a focusable element inside the position fixed element, i.e. an input element, this can cause the entire fixed element to jump out of place. This will only happen if the user has scrolled any amount (but if you're using position:fixed you're expecting exactly that kind of usage).