[Dev UI] Adjust css for large tool descriptions

We should adjust the css here.

1. At minimum, set things up so the description text is left aligned (instead of centered)
2. How do we feel about the 50% round corners? 

<img width="1202" alt="Image" src="https://github.com/user-attachments/assets/f4698ced-b912-46ab-8a28-4c749b348b43" />