diff --git a/mercurial/templates/monoblue/changeset.tmpl b/mercurial/templates/monoblue/changeset.tmpl
--- a/mercurial/templates/monoblue/changeset.tmpl
+++ b/mercurial/templates/monoblue/changeset.tmpl
@@ -39,7 +39,7 @@
     <h2 class="no-link no-border">changeset</h2>
 
     <h3 class="changeset"><a href="{url|urlescape}raw-rev/{node|short}">{desc|strip|escape|firstline|nonempty} <span class="logtags">{inbranch%inbranchtag}{branches%branchtag}{tags%tagtag}{bookmarks%bookmarktag}</span></a></h3>
-    <p class="changeset-age age">{date|rfc822date}</p>
+    <p class="changeset-age"><span class="age">{date|rfc822date}</span></p>
 
     <dl class="overview">
         <dt>author</dt>
diff --git a/mercurial/templates/monoblue/fileannotate.tmpl b/mercurial/templates/monoblue/fileannotate.tmpl
--- a/mercurial/templates/monoblue/fileannotate.tmpl
+++ b/mercurial/templates/monoblue/fileannotate.tmpl
@@ -41,7 +41,7 @@
 
     <h2 class="no-link no-border">{file|escape}@{node|short} (annotated)</h2>
     <h3 class="changeset">{file|escape}</h3>
-    <p class="changeset-age age">{date|rfc822date}</p>
+    <p class="changeset-age"><span class="age">{date|rfc822date}</span></p>
 
     <dl class="overview">
         <dt>author</dt>
diff --git a/mercurial/templates/monoblue/filerevision.tmpl b/mercurial/templates/monoblue/filerevision.tmpl
--- a/mercurial/templates/monoblue/filerevision.tmpl
+++ b/mercurial/templates/monoblue/filerevision.tmpl
@@ -41,7 +41,7 @@
 
     <h2 class="no-link no-border">{file|escape}@{node|short}</h2>
     <h3 class="changeset">{file|escape}</h3>
-    <p class="changeset-age age">{date|rfc822date}</p>
+    <p class="changeset-age"><span class="age">{date|rfc822date}</span></p>
 
     <dl class="overview">
         <dt>author</dt>