Change style of Comments intro and share post intro

Fix #31

static/css/elegant.css

@@ -60,8 +60,13 @@ ul.footer-content li {
     float: left;
 }
 /* comment */
-#comment-message {
-    color: #808080;
+#comment-message,
+#post-share-links:not(a) {
+    color: #6F6F6F;
+    text-shadow: 1px 1px 3px rgba(50, 50, 50, 0.15);
+}
+#post-share-links a{
+    text-shadow: 0 0;
 }
 .disqus-comment-count {
     font-family: 'Trebuchet MS', Trebuchet, 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, Sans-Serif;