diff --git a/phpBB/styles/prosilver/theme/content.css b/phpBB/styles/prosilver/theme/content.css
index 6950258ae2..409b2584a2 100644
--- a/phpBB/styles/prosilver/theme/content.css
+++ b/phpBB/styles/prosilver/theme/content.css
@@ -751,3 +751,18 @@ div.dl_links {
 .dl_links li {
 	display: inline-block;
 }
+
+/* Show scrollbars for items with overflow on iOS devices
+----------------------------------------*/
+.postbody .content::-webkit-scrollbar, #topicreview::-webkit-scrollbar, #post_details::-webkit-scrollbar, .codebox code::-webkit-scrollbar, .attachbox dd::-webkit-scrollbar, .attach-image::-webkit-scrollbar, #notification_list ul::-webkit-scrollbar {
+	width: 8px;
+	height: 8px;
+	-webkit-appearance: none;
+	background: rgba(0, 0, 0, .1);
+	border-radius: 3px;
+}
+
+.postbody .content::-webkit-scrollbar-thumb, #topicreview::-webkit-scrollbar-thumb, #post_details::-webkit-scrollbar-thumb, .codebox code::-webkit-scrollbar-thumb, .attachbox dd::-webkit-scrollbar-thumb, .attach-image::-webkit-scrollbar-thumb, #notification_list ul::-webkit-scrollbar-thumb {
+	background: rgba(0, 0, 0, .3);
+	border-radius: 3px;
+}