diff --git a/.idea/.idea.c3stream/.idea/contentModel.xml b/.idea/.idea.c3stream/.idea/contentModel.xml
index c9d3755..de56e30 100644
--- a/.idea/.idea.c3stream/.idea/contentModel.xml
+++ b/.idea/.idea.c3stream/.idea/contentModel.xml
@@ -1,10 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ContentModelStore">
-    <e p="$USER_HOME$/Library/Caches/Rider2019.3/extResources" t="IncludeRecursive" />
-    <e p="$USER_HOME$/Library/Caches/Rider2019.3/resharper-host/local/Transient/ReSharperHost/v193/SolutionCaches/_c3stream.-879192168.00" t="ExcludeRecursive" />
-    <e p="$APPLICATION_CONFIG_DIR$/javascript/extLibs/http_kit.fontawesome.com_c1a632a160.js" t="IncludeRecursive" />
-    <e p="$APPLICATION_CONFIG_DIR$/javascript/extLibs/http_pro.fontawesome.com_releases_v5.11.2_css_all.css" t="IncludeRecursive" />
+    <e p="$USER_HOME$/Library/Caches/JetBrains/Rider2020.1/extResources" t="IncludeRecursive" />
+    <e p="$USER_HOME$/Library/Caches/JetBrains/Rider2020.1/resharper-host/local/Transient/ReSharperHost/v201/SolutionCaches/_c3stream.-879192168.00" t="ExcludeRecursive" />
     <e p="$PROJECT_DIR$" t="IncludeRecursive">
       <e p=".gitignore" t="Include" />
       <e p="appsettings.Development.json" t="Include" />
diff --git a/Pages/Conference.cshtml b/Pages/Conference.cshtml
index 48782c5..5fa4337 100644
--- a/Pages/Conference.cshtml
+++ b/Pages/Conference.cshtml
@@ -65,20 +65,20 @@
             <td>@talk.OriginalLanguage</td>
             <td>
                 <div class="btn-group w-100" role="group">
-                    <a href="@talk.FrontendLink.AbsoluteUri" type="button" class="btn btn-primary w-100" data-toggle="tooltip" data-placement="top" title="Play">
+                    <a href="@talk.FrontendLink.AbsoluteUri" role="button" class="btn btn-primary w-100" data-toggle="tooltip" data-placement="top" title="Play">
                         <i class="fas fa-play-circle"></i>
                     </a>
                     @if (System.IO.File.Exists(System.IO.Path.Combine(c3stream.CachePath, conference.Acronym, file))) {
-                        <a href="@(c3stream.CacheUrl + $"{conference.Acronym}/{file}")" type="button" class="btn btn-primary w-100" data-toggle="tooltip" data-placement="top" title="Mirror">
+                        <a href="@(c3stream.CacheUrl + $"{conference.Acronym}/{file}")" role="button" class="btn btn-primary w-100" data-toggle="tooltip" data-placement="top" title="Mirror">
                             <i class="fas fa-cloud-download"></i>
                         </a>
                     }
                     else {
-                        <a href="/" type="button" class="btn btn-primary disabled">
+                        <a href="/" role="button" class="btn btn-primary disabled">
                             <i class="fas fa-cloud-download"></i>
                         </a>
                     }
-                    <a href="/Info?guid=@talk.Guid&bookmark=@Request.Query["bookmark"]" type="button" class="btn btn-primary w-100" data-toggle="tooltip" data-placement="top" title="Info">
+                    <a href="/Info?guid=@talk.Guid&bookmark=@Request.Query["bookmark"]" role="button" class="btn btn-primary w-100" data-toggle="tooltip" data-placement="top" title="Info">
                         <i class="fas fa-info-circle"></i>
                     </a>
                     @if (isWatched) {
diff --git a/Pages/Index.cshtml b/Pages/Index.cshtml
index f0a31d6..8a22bd6 100644
--- a/Pages/Index.cshtml
+++ b/Pages/Index.cshtml
@@ -11,7 +11,7 @@
     <code onclick="copyToClipboard(this)">https://@Request.Host.Value?bookmark=@Request.Cookies["bookmark"]</code><br/><br/>
     <div class="btn-group">
         @foreach (var conf in c3stream.Conferences) {
-            <a type="button" class="btn btn-primary" href="/Conference?c=@conf.Acronym&bookmark=@Request.Cookies["bookmark"]">@conf.Acronym</a>
+            <a role="button" class="btn btn-primary" href="/Conference?c=@conf.Acronym&bookmark=@Request.Cookies["bookmark"]">@conf.Acronym</a>
         }
     </div>
 </div>
\ No newline at end of file
diff --git a/Pages/Info.cshtml b/Pages/Info.cshtml
index 084a762..95328a3 100644
--- a/Pages/Info.cshtml
+++ b/Pages/Info.cshtml
@@ -67,16 +67,16 @@ else {
 
 <h5>@eventName - @category - @talk.Date?.Date.ToShortDateString()</h5>
 <div class="btn-group" role="group" style="margin-bottom: 10px">
-    <a href="@talk.FrontendLink.AbsoluteUri" type="button" class="btn btn-primary w-100" data-toggle="tooltip" data-placement="right" title="Play">
+    <a href="@talk.FrontendLink.AbsoluteUri" role="button" class="btn btn-primary w-100" data-toggle="tooltip" data-placement="right" title="Play">
         <i class="fas fa-play-circle"></i>
     </a>
     @if (System.IO.File.Exists(System.IO.Path.Combine(c3stream.CachePath, conference.Acronym, file))) {
-        <a href="@(c3stream.CacheUrl + $"{conference.Acronym}/{file}")" type="button" class="btn btn-primary w-100" data-toggle="tooltip" data-placement="right" title="Mirror">
+        <a href="@(c3stream.CacheUrl + $"{conference.Acronym}/{file}")" role="button" class="btn btn-primary w-100" data-toggle="tooltip" data-placement="right" title="Mirror">
             <i class="fas fa-cloud-download"></i>
         </a>
     }
     else {
-        <a href="/" type="button" class="btn btn-primary disabled">
+        <a href="/" role="button" class="btn btn-primary disabled">
             <i class="fas fa-cloud-download"></i>
         </a>
     }
diff --git a/Pages/Shared/_Layout.cshtml b/Pages/Shared/_Layout.cshtml
index a46ccb4..fb258e2 100644
--- a/Pages/Shared/_Layout.cshtml
+++ b/Pages/Shared/_Layout.cshtml
@@ -13,7 +13,7 @@
     <nav class="navbar navbar-expand-sm navbar-toggleable-sm navbar-light bg-white border-bottom box-shadow mb-3">
         <div class="container-fluid" style="width: 90%">
             <a class="navbar-brand" asp-area="" asp-page="/Index">c3stream <small style="font-size: x-small">v4</small></a>
-            <button class="navbar-toggler" type="button" data-toggle="collapse" data-target=".navbar-collapse" aria-controls="navbarSupportedContent"
+            <button class="navbar-toggler" role="button" data-toggle="collapse" data-target=".navbar-collapse" aria-controls="navbarSupportedContent"
                     aria-expanded="false" aria-label="Toggle navigation">
                 <span class="navbar-toggler-icon"></span>
             </button>
diff --git a/wwwroot/lib/bootstrap/dist/css/bootstrap-reboot.css b/wwwroot/lib/bootstrap/dist/css/bootstrap-reboot.css
index 09cf986..6e57d41 100644
--- a/wwwroot/lib/bootstrap/dist/css/bootstrap-reboot.css
+++ b/wwwroot/lib/bootstrap/dist/css/bootstrap-reboot.css
@@ -231,21 +231,21 @@ select {
 }
 
 button,
-[type="button"],
+[role="button"],
 [type="reset"],
 [type="submit"] {
   -webkit-appearance: button;
 }
 
 button:not(:disabled),
-[type="button"]:not(:disabled),
+[role="button"]:not(:disabled),
 [type="reset"]:not(:disabled),
 [type="submit"]:not(:disabled) {
   cursor: pointer;
 }
 
 button::-moz-focus-inner,
-[type="button"]::-moz-focus-inner,
+[role="button"]::-moz-focus-inner,
 [type="reset"]::-moz-focus-inner,
 [type="submit"]::-moz-focus-inner {
   padding: 0;
diff --git a/wwwroot/lib/bootstrap/dist/css/bootstrap.css b/wwwroot/lib/bootstrap/dist/css/bootstrap.css
index 8f47589..ca189ec 100644
--- a/wwwroot/lib/bootstrap/dist/css/bootstrap.css
+++ b/wwwroot/lib/bootstrap/dist/css/bootstrap.css
@@ -261,21 +261,21 @@ select {
 }
 
 button,
-[type="button"],
+[role="button"],
 [type="reset"],
 [type="submit"] {
   -webkit-appearance: button;
 }
 
 button:not(:disabled),
-[type="button"]:not(:disabled),
+[role="button"]:not(:disabled),
 [type="reset"]:not(:disabled),
 [type="submit"]:not(:disabled) {
   cursor: pointer;
 }
 
 button::-moz-focus-inner,
-[type="button"]::-moz-focus-inner,
+[role="button"]::-moz-focus-inner,
 [type="reset"]::-moz-focus-inner,
 [type="submit"]::-moz-focus-inner {
   padding: 0;
@@ -2993,7 +2993,7 @@ fieldset:disabled a.btn {
 
 input[type="submit"].btn-block,
 input[type="reset"].btn-block,
-input[type="button"].btn-block {
+input[role="button"].btn-block {
   width: 100%;
 }