Worked on the sveltejs/svelte repository to enhance the Svelte 5 migration guide, focusing on documentation related to CSS scoping and Tailwind integration. Improved clarity around the use of the :has() pseudo-class by explaining its component-scoped behavior, which helps developers correctly apply global selectors when using Tailwind’s @apply directive. Utilized Markdown to update and polish the documentation, ensuring traceability by linking the relevant commit. The work aimed to reduce friction for developers migrating to Svelte 5, providing clear guidance on CSS selector usage within components. Emphasized documentation quality and accuracy to support a smoother migration process for the community.