Update assets/app.css

assets/app.css

@@ -88,14 +88,14 @@
 }
 
 .bot_avatar {
-  width: 300px;
+  width: 100px;
   height: 100px;
   border-radius: 50%;
   overflow: hidden;
 }
 
 .bot_avatar img {
-  width: 300px;
+  width: 100px;
   height: 100px;
 }