How Can I Redirect An Entire Domain To Just One Webpage Using .Htaccess

Example:

www.domain.com to redirect to www.newdomain.com/webpage.html (that’s what I have know)

But I also want to redirect www.domain.com/$ to redirect to www.newdomain.com/webpage.html (where the $ is any page).

Basically, any page visited to www.domain.com should be redirected to www.newdomain.com/webpage.html.

Thanks.