Bootstrap 4 IE 11 does not work

so I have the problem, that my whole website does not work in IE 11. I don't get why because officially IE 11 should be supported by bootstrap 4... Website: I'm a bit helpless right now, because I don't know where to start. Did I miss something for IE 11 to inlcude in my code?

In Firefox, , Edge, Chrome and Safari it works just fine...

Because right now, I have the feeling that bootstrap 4 is not compatible for IE 11 at all...

Thanks for any reply!

this is my navbar for example, it is not visible in IE 11:

#logonav {

   height: 40px; 
    width: auto;

/* change the link color */
.navbar-custom .navbar-nav .nav-link {
    color: #2E8B57;
/* change the color of active or hovered links */
.navbar-custom .nav-item .nav-link .active,
.navbar-custom .nav-item:hover .nav-link {
    color: orangered; 

/* change the brand and text color */
.navbar-custom .navbar-brand,
.navbar-custom .navbar-text {
    color: #2E8B57;

.custom-toggler.navbar-toggler {
    border-color: rgb(46,139,87);
.custom-toggler .navbar-toggler-icon {
  background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 32 32' xmlns=''%3E%3Cpath stroke='rgba(46, 139, 87, 1)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 8h24M4 16h24M4 24h24'/%3E%3C/svg%3E");


<!DOCTYPE html>
<html lang="de">

    <meta charset="UTF-8">
    <!-- IE Edge Meta Tag -->
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <!-- Viewport -->
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta http-equiv="x-ua-compatible" content="ie=edge">
    <!-- Minified CSS -->
    <link rel="stylesheet" href="" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ"
    <link rel="stylesheet" href="ergo.css">
    <title>Bettina Klinkicht Ergotherapeutische Praxis Bonn</title>
    <link rel="shortcut icon" type="image/x-icon" class="img-circle" href="logopur.png">
    <!-- Global Site Tag (gtag.js) - Google Analytics -->
    <script async src=""></script>
        window.dataLayer = window.dataLayer || [];
        function gtag() { dataLayer.push(arguments) };
        gtag('js', new Date());

        gtag('config', 'UA-107069424-1');
 <nav class="navbar navbar-inverse fixed-top transparent navbar-toggleable-sm navbar-custom">
        <div class="navbar-inner">
            <!-- Brand and toggle grouped for better mobile display -->
            <button class="navbar-toggler navbar-toggler-right custom-toggler" type="button" data-toggle="collapse" data-target="#navmobile"
                aria-controls="navmobile" aria-expanded="false" aria-label="Toggle Navigation">
        <span class="navbar-toggler-icon"></span>

            <a href="home.html" class="navbar-brand"><img src="logopur_neu.png" alt="Logo" id="logonav"></a>
        <!-- Collect nav-links for toggling-->
        <div class="collapse navbar-collapse" id="navmobile">
            <div class="navbar-nav ml-auto">
                <a class="nav-item nav-link active" href="#">Home</a>
                <a class="nav-item nav-link" href="Therapeutin.html">√úber mich</a>

                <div class="dropdown">
                    <a class="nav-item nav-link dropdown-toggle" href="#" data-toggle="dropdown" id="servicesDropdown" aria-haspopup="true" aria-expanded="false">Angebot</a>
                    <div class="dropdown-menu" aria-labelledby="servicesDropdown">
                        <a class="dropdown-item" href="Geriatrie.html">Geriatrie</a>
                        <a class="dropdown-item" href="Neurologie.html">Neurologie</a>
                        <a class="dropdown-item" href="Spiegeltherapie.html">Spiegeltherapie</a>
                        <a class="dropdown-item" href="Schwindeltherapie.html">Schwindeltherapie</a>
                        <a class="dropdown-item" href="Biographiearbeit.html">Biographiearbeit</a>
                        <a class="dropdown-item" href="Brain_Gym.html">Brain Gym</a>
                        <a class="dropdown-item" href="Sensibilitaetstraining.html">Sensibilitätstraining</a>
                        <a class="dropdown-item" href="Gleichgewichtstraining.html">Gleichgewichtstraining</a>

                <a class="nav-item nav-link" href="Kontakt.html">Kontakt</a>
        <script src="" integrity="sha384-A7FZj7v+d/sdmMqp/nOQwliLvUsJfDHW+k9Omg/a/EheAdgtzNs3hpfag6Ed950n"
    <script src="" integrity="sha384-DztdAPBWPRXSA/3eYEEUWrWCy7G5KFbe8fFjk5JAIxUYHKkDx6Qin1DkWx51bBrb"
    <script src="" integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn"
    <script src="ergo.js"></script>


Posting just in case this could help someone else. I ran into the same issue where everything ran just fine in Chrome but in IE11 it acted like it could not see any CSS. I came across this post but it didn't help. After more searching I found a suggestion to add the following in the HEAD tag and it worked. Figured I would post here since this is one of the first threads that comes up in a Google search.

<meta http-equiv="X-UA-Compatible" content="IE=edge" />

In IE, the height and width need to be set explicitly or it breaks.

So the width: auto might be causing a problem. auto gives me a lot of problems. Maybe give that a try

I had a display issue using IE11 when using the class .card-deck I fixed this by adding

.card-deck {
    width: 100% !important;

Hope this helps somebody :)

I had the same problem. You have to close all the meta and link tags in your head with a />.

Need Your Help

How to get the type of the reference?


Is there any function available in Perl to check the reference type:

Using jQuery To Get Size of Viewport

jquery resize size viewport

How do I use jQuery to determine the size of the browser viewport, and to redetect this if the page is resized? I need to make an IFRAME size into this space (coming in a little on each margin).