Revert "*: update docs for hackdoc"

This reverts commit cc8c69c8974f7ce415641121cedb01d7e6aa9e17.

Reason for revert: <INSERT REASONING HERE>

Change-Id: I1315e930e2ef69db3188eda05e4aa0b12db24274
diff --git a/devtools/hackdoc/tpl/default.html b/devtools/hackdoc/tpl/default.html
index a6c1d42..7120962 100644
--- a/devtools/hackdoc/tpl/default.html
+++ b/devtools/hackdoc/tpl/default.html
@@ -58,7 +58,7 @@
 }
 
 .column {
-    width: 80em;
+    max-width: 80em;
     padding: 1rem 0 1rem 0;
 }
 
@@ -85,16 +85,8 @@
     color: #b30014;
 }
 
-.header span.part {
+.header span.muted {
     color: #666;
-    padding-left: 0.2em;
-}
-
-.header span.part a {
-    color: rgb(27, 106, 203);
-}
-.header span.part a:visited {
-    color: rgb(27, 106, 203);
 }
 
 .footer {
@@ -106,14 +98,6 @@
     text-align: right;
 }
 
-.footer .left {
-    float: left;
-}
-
-.footer .right {
-    float: right;
-}
-
 .footer a {
     color: #bbb;
 }
@@ -180,20 +164,15 @@
     <div class="column">
         <div class="page">
             <div class="header">
-                <span class="red">hackdoc:</span>
-                {{ range .PathParts }}<span class="part"><a href="{{ .Path }}">{{ .Label }}</a></span>{{ end }}
-                <span class="red" style="margin-left: 1em;">shortcuts:</span> <a href="/">root</a>, <a href="/cluster/doc">cluster docs</a>, <a href="/doc/codelabs">codelabs</a>
-            </div>
-            {{ .Rendered }}
-        </div>
-        <div class="footer">
-            <div class="left">
-                View in:
+                <span class="red">hackdoc:</span><span>{{ .Path }}</span>
                 {{ range .WebLinks }}
                 <span class="muted">[{{ .Kind }} <a href="{{ .LinkURL }}">{{ .LinkLabel }}</a>]</span>
                 {{ end }}
             </div>
-            <div class="right">Generated by <a href="{{ .HackdocURL }}/devtools/hackdoc">hackdoc</a>.</div>
+            {{ .Rendered }}
+        </div>
+        <div class="footer">
+            Generated by <a href="{{ .HackdocURL }}/devtools/hackdoc">hackdoc</a>.
         </div>
     </div>
 </div>