Add wording to accompany CC license in footer

     /* grid-template-columns: 5em 40em 13em; */
     grid-template-columns: 8.333% 66.666% 21.666%;
     grid-template-rows: min-content min-content min-content;
-    margin: 0 auto;
+    margin: 0 auto 2em auto;
     max-width: 60em;
     padding: 1.5em 0; }
 body.widescreen {

   font-size: .8em; }
 body > footer img.cc {
   height: 1.25em !important;
-  margin-left: 3px;
+  margin: 0 .1em;
   vertical-align: text-bottom; }
 
 .system {

 </div>
 </aside>
 
-<footer><a
+<footer>site content licensed <a
 href=http://creativecommons.org/licenses/by-nc-sa/4.0 target=_blank
 rel="license noopener noreferrer" style=display:inline-block
-title="Attribution-NonCommercial-ShareAlike 4.0 International">
-<img class=cc src=/static/cc.svg> <img class=cc src=/static/by.svg>
-<img class=cc src=/static/nc.svg> <img class=cc src=/static/sa.svg>
-</a></footer>
+title="Attribution-NonCommercial-ShareAlike 4.0 International"><img
+class=cc src=/static/cc.svg> <img class=cc src=/static/by.svg> <img
+class=cc src=/static/nc.svg> <img class=cc src=/static/sa.svg></a> unless
+otherwise noted</footer>
 
 <script src=https://cdn.jsdelivr.net/npm/vosk-browser@0.0.5/dist/vosk.js></script>
 <script>