Changes for tag key in side_bar announcement and news, fix ad_banner css for dot

app/assets/stylesheets/style.css.erb

@@ -682,6 +682,9 @@
 	resize: none;
 	max-height: 500px;
 }
+#banner [id^="slideshow-"] {
+	z-index: 2 !important;
+}
 [class^="icons-"] {
 	display: inline-block;
 	width: 16px;