How do I style the login-page of Drupal 7? I used different methods like page-user-login.tpl or user-login.tpl of page-login.tpl but with no results.
Is there an easy way to theme your login page in Drupal 7 in his own .tpl-file?
You can override any page template by naming your templates in the following convention:
For page 'user/login':
page--user--login.tpl.php
For page 'foo/bar/'
page--foo--bar.tpl.php
See Core templates and About overriding themable output for more information.
Remember to clear Drupal's caches once you add a new template file so the theme registry has a chance to pick the new file up.
来源：https://stackoverflow.com/questions/8712061/style-drupal-7-log-in-page