How can I make this button?

[maxhud]

If you look to the center right of this page, there is an Add Me button.

How can I make this button style with CSS?

Thanks

[VIPStephan]

Have you ever considered using Firebug (or similar debugging tools in other browsers) and its element inspector? Because then you’d have found out that the button consists of this HTML:

<input type="submit" value="Add Me" name="commit" id="invite_request_submit" class="green">

And it even shows you the styles that are applied to this element. So all you’d have to do is copy that.