Style <small> element in default themes a bit smaller than normal text, props obenland. Fixes #22109.

git-svn-id: https://develop.svn.wordpress.org/trunk@22211 602fd350-edb4-49c9-b593-d223f7449a82

wp-content/themes/twentyeleven/style.css

@@ -431,6 +431,9 @@ sup {
 sub {
 	top: .5ex;
 }
+small {
+	font-size: smaller;
+}
 
 /* Forms */
 input[type=text],

wp-content/themes/twentyten/style.css

@@ -308,6 +308,9 @@ sup {
 sub {
 	top: .5ex;
 }
+small {
+	font-size: smaller;
+}
 input[type="text"],
 textarea {
 	background: #f9f9f9;

wp-content/themes/twentytwelve/style.css

@@ -151,6 +151,9 @@ sup {
 sub {
 	bottom: -0.25em;
 }
+small {
+	font-size: smaller;
+}
 img {
 	border: 0;
 	-ms-interpolation-mode: bicubic;