A small nuance with css and slider.

Hi folks,

We have enabled WPMUDEV access in the dashboard (site url is seen by staff).

***How can we get the the retail price that has the black line through it to be black but the price to the right to be red with css. They both seem to have a similar element and changing one changes both right now.

***There is a slider at the bottom of the homepage. It is in a widget. How can one make it smaller (say a small 150x150 pixel "square" slider)?