Broken styles

Hello,

I really like this plugin and I have it working on one of my WordPress sites. I was trying to make the “lost your password” link invisible with display:none but I couldn’t, so I stopped trying and saved the styles.css of my child theme. Somehow, after I deleted that line of code, the login page stopped showing the style I had set in the settings page for the plugin and until now I am unable to see it the way it was.

Could you help me out with it? Thank you!

http://wordpress.org/plugins/erident-custom-login-and-dashboard/