[Typo3] How to customize login form?

[Martin Wan]

Hi all,

I want to create a login form in our website. However, after I created a
login content (using newloginbox) and added it in a page, I find the style
of the login form is different from that of our web site. How to change the
login form style? Do I need to change the CSS or php code of the extension?

The followings are the characters of my login form:
1. The default "submit" button of the login form is a standard html submit
button, my login form uses an image with link to submit.
2. The labels of the input text fields are different from the defaults. They
are:
   "Nickname/E-mail" and "Password:"
3. The CSS style of login form's title and labels is different from the
defaults. Further more the CSS style of title is different from that of
labels.

Could anyone please give me some hints? Thanks in advance.

Martin Wan