### What version of `starlight` are you using? 0.34.4 ### What version of `astro` are you using? 5.11.0 ### What package manager are you using? npm ### What operating system are you using? Mac ### What browser are you using? Chrome ### Describe the Bug When using UI framework components, the `margin-top` between elements applied by Starlight's Markdown styling does not work on the `astro-island` element. <img width="327" height="166" alt="Image" src="https://github.com/user-attachments/assets/8f401a39-d1fb-4aea-8343-c30619f9b273" /> ### Link to Minimal Reproducible Example https://stackblitz.com/edit/github-hczwebv8?file=src%2Fcontent%2Fdocs%2Findex.mdx ### Participation - [ ] I am willing to submit a pull request for this issue.