In the "old days", web pages were often just the bare content (no html, head, body containers, no DOCTYPE declaration). A few sites also featured just the body tag (and respective content) for setting the background attribute for the page background color.

E.g., this is the entire code of Netscape's first home page:

    <TITLE>Welcome to Mosaic Communications Corporation!</TITLE>
    <CENTER>
    <A HREF="MCOM/index2.html"><IMG SRC="MCOM/images/mcomwelcome1.gif" BORDER=1></A>
    <H3>
    <A HREF="MCOM/index2.html">Click on the Image or here to advance</A>
    </H3>
    </CENTER>

http://home.mcom.com/