Fix formatting and overflow of 'usage' example

index.html

@@ -163,14 +163,14 @@ <h2 id="quick-start">Quick start <a href="#quick-start">⌾</a></h2>
           Explore definitions with <span class="lighter">defs</span> and
           <span class='lighter'>usage</span>.
         </p>
-        <pre>
+        <pre style="overflow-x: scroll;">
         $ dt defs pls | head -n 3
         *
         +
         -
 
         $ dt   \\pls usage pls   quit
-        ( [<a>] -- ) Print the values of the most recent quote, each followed by a newline, to standard output.
+        ( [&lt;a&gt;] -- ) Print the values of the most recent quote, each followed by a newline, to standard output.
         </pre>
 
         <p>