Showcase slider pager text indent issue

[vijayhardaha]

​https://wordpress.org/showcase/

White dots I changed them to red to see clearly as visible and affact clicks on pager if clicked on span content.

If I click a little bit outside of the first pager circle, I navigate to 3rd because I click on span content actually.

Current text indent text-indent: -1000%; should be text-indent: -999999px;

[aezazshekh]

added patch

[dufresnesteven]

In 11699:

Showcase: Fix rotator circle control.

Props aezazshekh
Fixes: #6183