diff --git a/epicyon-profile.css b/epicyon-profile.css
index b384cb514..a55afb4e1 100644
--- a/epicyon-profile.css
+++ b/epicyon-profile.css
@@ -353,6 +353,12 @@ details {
     color: var(--cw-color);
 }
 
+.instanceSoftware {
+    background-color: var(--main-bg-color);
+    color: var(--main-fg-color);
+    font-size: 50%;
+}
+
 .leftColIcons {
     width: 100%;
     background-color: var(--column-left-color);
diff --git a/webapp_post.py b/webapp_post.py
index e301453f8..513aae293 100644
--- a/webapp_post.py
+++ b/webapp_post.py
@@ -1553,8 +1553,9 @@ def _get_post_title_announce_html(base_dir: str,
 
     if software_name:
         title_str += \
-            '<br><span itemprop="software"><mark>[' + \
-            software_name.title() + ']</mark></span>'
+            '<br><label class="instanceSoftware">' + \
+            '<span itemprop="software">[' + \
+            software_name.title() + ']</span></label>'
 
     # show avatar of person replied to
     announce_actor = attributed_to
@@ -1836,8 +1837,9 @@ def _get_post_title_reply_html(base_dir: str,
 
     if software_name:
         title_str += \
-            '<br><span itemprop="software"><mark>[' + \
-            software_name.title() + ']</mark></span>'
+            '<br><label class="instanceSoftware">' + \
+            '<span itemprop="software">[' + \
+            software_name.title() + ']</span></label>'
 
     _log_post_timing(enable_timing_log, post_start_time, '13.7')