/*
#canvas{
  background:none;
  border:none;
}

#layout .login{
 width: 520px;
 margin:20px auto;
}

#login_dialog{
  background-color:#fff;
  padding:50px;
}

#site_name{
  float:none;
  text-align:center;
  padding:10px;
  color:#fff;
}
*/