diff --git a/stylesheets/manifest.css b/stylesheets/manifest.css
index 1a5a382a3..56231644b 100644
--- a/stylesheets/manifest.css
+++ b/stylesheets/manifest.css
@@ -128,6 +128,13 @@ body, input {
 body {
   margin: 0; }
 
+.group-update {
+  font-size: smaller; }
+
+.sender {
+  font-size: smaller;
+  opacity: 0.8; }
+
 .title-bar {
   position: fixed;
   top: 0;
diff --git a/stylesheets/view/_conversation.scss b/stylesheets/view/_conversation.scss
index 3640d76b8..d26babecf 100644
--- a/stylesheets/view/_conversation.scss
+++ b/stylesheets/view/_conversation.scss
@@ -11,6 +11,15 @@ body {
   margin: 0;
 }
 
+.group-update {
+  font-size: smaller;
+}
+
+.sender {
+  font-size: smaller;
+  opacity: 0.8;
+}
+
 .title-bar {
   position: fixed;
   top: 0;