Improve wizard sample

Currently, the wizard sample provides the wizard functionality, but tabs don't not look like as wizard steps. 
Add CSS styles that show how to make it for better user experience.

Example from Ant Design:

<img width="1252" height="139" alt="Image" src="https://github.com/user-attachments/assets/403165f1-caf4-4e71-b70c-7507a941e654" />