javascript - Nav isn't sticking to the top at widths less than 1025px -


i'm using wordpress , foundation build site. have nav bar i'd fix top of page once hits top of window. however, nav not sticking top @ widths smaller 1025px , i'm not getting console errors. here jquery:

jquery(document).ready(function($) {   var distance = $('.maincontent').offset().top    $(window).scroll(function() {     if ($(window).scrolltop() >= distance) {       $("#nav_bar").addclass("fixedtop");     } else  {       $("#nav_bar").removeclass("fixedtop");     }   }) });

css 

.fixedtop { position: fixed; top: 0; z-index: 999; margin-bottom: 30px; }


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