fix(chat): change margins to avoid different background color

css/_chat.scss

 
 .usrmsg-form {
     flex: 1;
-    margin-left: 5px;
 }
 
 #usermsg {
     color: white;
     font-size: 10pt;
     line-height: 30px;
-    padding: 5px 5px 5px 0px;
+    padding: 5px;
     max-height:150px;
     min-height:35px;
     overflow-y: auto;