for every Web page you make they will ask you to Print 2 things
1) Print how it is viewed in your web browsers : for this when u finish making the page in front page save the page and press F12 . go to file and then print . your first page will be too wide to appear in portrait page so change it into landscape . make sure your header and footer are there ( file - page setup - header and footer )
2) Print your web page Html Codes : in front page set the view option to code from the bottom and then click File >> Print . No need for header and footer here because once u set them it will always be there in Front Page
No need for screen shots at all in front page ,the only place u need screen shots are in sending mails , Acces , Power Point .
and no black backgrounds are there so no need to worry .