HELP with login background

Hi need some help to make the background black + adding site logo back in
- screenshot changes - http://take.ms/rnPD6
- link - http://tinyurl.com/o7o56xf

I added this

body.login {
background-color: #000;
}

to the file domain.com/wp-content/themes/fitcoach-child/login/custom-login-styles.css
and functions.php in child theme - http://pastebin.com/r2v7khHP

purged wodpress side. but seems to have no effect?

Support Access is open for the next 5 days.

Please dont post any brand related information/ screenshots or domain links as i have had issues with google caching this information and linking it to their google searches of my site ... very bad for brand... please use temporary image upload / tiny url / pastebin etc to mask this information.

Thanks

Tom