diff --git a/syweb/webclient/app.css b/syweb/webclient/app.css
index bede53359..23ec42f12 100755
--- a/syweb/webclient/app.css
+++ b/syweb/webclient/app.css
@@ -346,6 +346,7 @@ textarea, input {
 #mainInput {
     width: 100%;
     padding: 5px;
+    resize: vertical;
 }
 
 #attachButton {