html - How do you make a fixed, responsive sidebar? -


this website has beautiful sidebar: http://thenextweb.com/ know how make fixed sidebar in css, making stop scrolling @ point i'm lost. , making disappear @ width media query think?

try script

    <script>  $(document).ready(function(){   $('#page').scroll(function(){      if(document.getelementbyid("page").scrolltop > 100) {        $('#sidebar').css("position","fixed");      }     });    });

where page wrapper element


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