change navbar width to auto for width below 700px

Author: OmkarSonawane1230

css/main.css

@@ -101,7 +101,7 @@ body {
         padding: 1em;
     }
     .navbar {
-        width: 100%;
+        width: auto;
         -webkit-box-ordinal-group:4;
         -webkit-order:3;
         -ms-flex-order:3;