diff --git a/client/coral-embed-stream/style/default.css b/client/coral-embed-stream/style/default.css
index 13a200690..d66e43e27 100644
--- a/client/coral-embed-stream/style/default.css
+++ b/client/coral-embed-stream/style/default.css
@@ -187,6 +187,7 @@ hr {
 /* Comment Box Styles */
 .coral-plugin-commentbox-container {
   display: flex;
+  width: 100%;
 }
 
 .coral-plugin-commentbox-textarea {