Remove pink lines and hovers from Pandora them

Try using Firefox with the Firebug add-on for this kind of CSS troubleshooting. Or use whatever developer tool is available in your web browser.

And do not make any changes to the theme itself. First create a child theme for your changes or install a custom CSS plugin.

I’m very new to the world of websites and might need some hand holding to make the suggested changes. How can I find Firebug & how do I create a child theme?

Please see the links I posted above.