Hidden-md-down funktioniert nicht

Question

Ich versuche, ein Modal für Mobile und Tablets erscheinen zu verstecken.

In Bootstrap, ich bin mit versteckten-md-down und es funktioniert, aber es war nicht mehr funktioniert und ich habe nichts ändern:

$(function(){ 
 
    $('##myModal').modal('show'); 
 
});

<div class="ie-only" style="overflow-y:hidden;"> 
 
     \t <div class="modal fade in hidden-md-down" id="myModal" aria-hidden="false"> 
 
      \t <div class="modal-dialog modal-md custom-height-modal"> 
 
       \t <div class="modal-content"> 
 
        \t   \t <div class="modal-header topGrad" 
 
         \t <button type="button" class="close" data-dismiss="modal">x</button> 
 
          <h2 class="modal-header" style=""filter: alpha(opacity=200);">Outdated Browser Detected</h2><p>Our website has detected that you are using an outdated browser. Using your current browser will prevent you from accesing featuers on your website. An upgrade is not required, but is strongly recommend to improve your browsing experince on our website.<br /><br /> 
 
          <b>Use the links below to download a new browser or upgrade your existing browser.</b></p> 
 
         </div><!---Modal-Header Div---> 
 
         <div class="modal-body"> 
 
         \t <div class="row"> 
 
           <div class="col-sm-offset-2 col-sm-2 overrides-col-md-offset-2 col-md-2 text-center"> 
 
            <div class="hidden-xs"><a target="_blank" href="https://www.google.com/chrome/browser/desktop/index.html"><img alt="Chrome" height="200px" src="/default/images/chrome.png" width="440px" /></a></div> 
 
         
 
            <h6><a class="text-black" target="_blank" href="https://www.google.com/chrome/browser/desktop/index.html">Chrome</a></h6> 
 
           </div> 
 
         
 
           <div class="col-sm-2 col-md-2 text-center"> 
 
            <div class="hidden-xs"><a target="_blank" href="https://www.mozilla.org/en-US/firefox/new/?f=86"><img alt="Firefox" src="/default/images/firefox.png" /></a></div> 
 
         
 
            <h6><a class="text-black" target="_blank" href="https://www.mozilla.org/en-US/firefox/new/?f=86">Firefox</a></h6> 
 
           </div> 
 
         
 
           <div class="col-sm-2 col-md-2 text-center"> 
 
            <div class="hidden-xs"><a target="_blank" href="https://www.microsoft.com/en-us/download/internet-explorer.aspx"><img alt="Internet Explorer" src="/default/images/internet_explorer.png" /></a></div> 
 
         
 
            <h6><a target="_blank" class="text-black" href="https://www.microsoft.com/en-us/download/internet-explorer.aspx">Internet Explorer</a></h6> 
 
           </div> 
 
         
 
           <div class="col-sm-2 col-md-2 text-center"> 
 
            <div class="hidden-xs"><a target="_blank" href="https://support.apple.com/downloads/safari"><img alt="Safari" src="/default/images/safari.png" /></a></div> 
 
         
 
            <h6><a class="text-black" target="_blank" href="https://support.apple.com/downloads/safari">Safari</a></h6> 
 
           </div> 
 
\t \t \t \t \t \t \t </div> 
 
         </div><!---Modal-Body Div---> 
 
         <div class="modal-footer botGrad" <!---style="background-image:('/mura-6.2.6407/Regal-en-us/images/extended_bottom_provider.gif');"---> style="background-color:##4f89cc; filter: alpha(opacity=80);"> 
 
         \t <p class="text-center"><a class="btn btn-default" data-dismiss="modal" style="filter: alpha(opacity=100);">Close</a></p> 
 
         </div><!---Modal-Footer Div---> 
 
        </div><!---Modal-Content Div---> 
 
       </div><!---Custom Height Div---> 
 
      </div><!---Modal Fade in Div---> 
 
     </div><!---Start of Modal Div---> \t \t \t \t 
 
\t \t <!--End of Modal container-->

Jede mögliche Hilfe würde geschätzt .

Answer 1

In Bootstrap 3 die Klassen sind hidden-md, hidden-sm, hidden-xs, etc ..

Die hidden-md-down Klasse nur in Bootstrap 4.