changed button styles in career component

[TITHI1244]

Description

Changed button styles in career component

Fixes # (issue)

How to test?

Please provide a short summary how your changes can be tested?

Checklist

• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [x] This PR is ready to be merged and not breaking any other functionality

[JyothiNandyala]

I have checked it looks perfect.