CIF-1296 - Fix the styling of pagination bar

[LSantha]

• fit box size and border to content
• fix spacing and padding

Description

The border of the current page number overlaps the page number.

Related Issue

CIF-1296

How Has This Been Tested?

Manually.

Screenshots:

Types of changes

• [X] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [ ] I have signed the Adobe Open Source CLA.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [X] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes and the overall coverage did not decrease.
• [X] All unit tests pass on CircleCi.
• [X] I ran all tests locally and they pass.