User Survey Report: Remove side navigation on small screens

Author: fhemberger

external/survey-2018/index.html

@@ -37,7 +37,7 @@ <h1>2018 Node.js User Survey Report</h1>
     <div class="col-md-2"></div>
     <div class="col-md-8 row">
       <div class="col-md-3">
-        <div class="side-nav hidden-xs affix" data-offset-top="540" data-spy="affix">
+        <div class="side-nav hidden-xs hidden-sm affix" data-offset-top="540" data-spy="affix">
           <ul class="nav main-nav">
             <li class="active">
               <a href="#overview">Overview</a>