A Brief Introduction to HTML Style Sheets

A minimalistic HTML document looks something like this: 
<HTML>
<HEAD>
<TITLE>Welcome</TITLE>
</HEAD>
<BODY>
<H1>Welcome to my Web Page </H1>

<P>Thank you for visiting my personal page.  Your visit has given me
some reason to live. Click <A href="http://rubin.html">here</A> to
see a picture of my dead cat Rubin. </P>

</BODY>
</HTML>
One way to view HTML documents is as a hierarchical structure of elements. For instance:
Or alternatively,

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