DEV-11104 updated styles for dtui button

[nick-torres]

Check List Before Merging

Author

• Story Book has been rebuilt (new build artifacts in /docs)
• Components have been rebuilt (new build artifacts in /dist)

👆These can be done by executing npm run build and committing the build artifacts.

• All new components have been exported in /index.js (if applicable)
• Design Review Complete
• Relevant Draft release notes have been updated describing these changes (use this template to document your changes) (if applicable)
• Integration Status Updated on relevant documentation page (if applicable)
• index.d.ts updated with new prop types defined for new components. (if applicable)

Reviewer

• Code review