Jquery Change width and height on scroll - page elements

<!--CSS change on Scroll-->
 <script>
     $(window).scroll(function () {
  //if($(".toggleMenu").css("display") == "none"){  --> condition for mobile
            if ($(this).scrollTop() > 100) {
                $('.lgo').css({width:'90px'});
                $('.mm').css({margin:'5px 10px'});
            } else {
                $('.lgo').css({width:'140px'});
                $('.mm').css({margin:'15px 10px'});
            //}
   }        
  });
 </script>