Theming Drupal's user login block with CSS

http://api.drupal.org/api/function/user_login_block/6

Really, what is wanted is CSS

Here's a sample:

  #block-user-0 .form-item /* "User login form" block */
  {
    margin-top: .5em;
    margin-bottom: .5em;
  }

  #block-user-0 .form-item label /* "User login form" block */
    font-weight: normal;
  }

  #block-user-0 .item-list ul, #user-login-form .item-list ul, #user-login-form .item-list ul li,
  {
    list-style-type: none;
  }

  #block-user-0 .item-list ul li
  {
    list-style-type: none;
    margin-left: -2em;
  }
 
  #block-user-0 .item-list ul {
    margin-top: .5em;
  }

/** Drupal blocks **/
  .block /* Block wrapper */
  {
    margin-top: .75em;
    margin-bottom: 1.2em;
  }

  .block h2.title /* Block title */
  {
    font-size: 1.2em;
    line-height: 1.1em;
    background: url(images/bg_nav.png) repeat-x left bottom;
    padding: .3em;
  }

Yeah, I'm reusing the main navigation menu background on the block titles! But the part with the minimal improvements to Drupal's historically ugly login form block is above that. I think somewhere else must be setting the text-align to left as normal, or maybe only some common Drupal themes do the strange center alignment.

Resolution