UX Importer for Unity UI Toolkit is a toolset for converting UI designs created in web-based design platforms into Unity's UI Toolkit format (UXML and USS). It consists of an external design tool plugin (UX Exporter) and a Unity editor extension, smoothing the collaboration between designers and developers.
Export a JSON file with all scene information and necessary asset files as a ZIP using the UX Exporter plugin. Simply import that ZIP file into your Unity project to faithfully reproduce the layout from the original design.
Please obtain the external design plugin (UX Exporter) here.