Pagination needs style.

@alok_singh , pagination style has overlapping on mobile.

@Tanuja Fix the pagination style iisue

We need to close MR 7. As of now, in 2.0.x, we have 'bootstrap_barrio' as the base theme, so structural and parent class changes do not affect our pagination style. Therefore, I have created MR 15 against 8.x-1.x.