diff --git a/src/skins/vector/css/matrix-react-sdk/views/elements/RichText.css b/src/skins/vector/css/matrix-react-sdk/views/elements/RichText.css
index 8b8d3bd926..171482a362 100644
--- a/src/skins/vector/css/matrix-react-sdk/views/elements/RichText.css
+++ b/src/skins/vector/css/matrix-react-sdk/views/elements/RichText.css
@@ -12,3 +12,11 @@
     padding: 2px 8px;
     border-radius: 16px;
 }
+
+.mx_Markdown_BOLD {
+    font-weight: bold;
+}
+
+.mx_Markdown_ITALIC {
+    font-style: italic;
+}