Fix pagination styling

Problem/Motivation

While going through the theme for issues I found out that the pager styling is breaking on mobile also active pager item and the rest of the items have difference in height. Attaching the screen recording for a better understanding and making the issue clearer.

Steps to reproduce

Install the theme
Add 10-20 articles and check for the pagination.
You will be able to see the difference in the heights of the active pager item and the rest of the pager items.

Proposed resolution

Remaining tasks

none

User interface changes

Yes

API changes

none

Data model changes

none