Magento Theme edit

I have a website in magento and have tried to change the CSS of the login form but I am having no luck. I have disabled cache and yet still cannot edit this phtml file add in inline CSS. I need a freelancer who can tell me what is wrong and show me how to fix. There is no coding involved just an evaluation of the situation and show me how to add in inline css on the /customer/account/login/ which I can not now. I have edited the theme files here but no update shows on front end. PM for site and FTP details.