diff --git a/app/assets/javascripts/detailsPolyfill.js b/app/assets/javascripts/detailsPolyfill.js
index c3c5dc1cc..ce0692195 100644
--- a/app/assets/javascripts/detailsPolyfill.js
+++ b/app/assets/javascripts/detailsPolyfill.js
@@ -133,22 +133,20 @@
 
       // If this is not a native implementation, create an arrow
       // inside the summary
-      if (!NATIVE_DETAILS) {
 
-        var twisty = document.createElement('i');
-
-        if (openAttr === true) {
-          twisty.className = 'arrow arrow-open';
-          twisty.appendChild(document.createTextNode('\u25bc'));
-        } else {
-          twisty.className = 'arrow arrow-closed';
-          twisty.appendChild(document.createTextNode('\u25ba'));
-        }
-
-        details.__summary.__twisty = details.__summary.insertBefore(twisty, details.__summary.firstChild);
-        details.__summary.__twisty.setAttribute('aria-hidden', 'true');
+      var twisty = document.createElement('i');
 
+      if (openAttr === true) {
+        twisty.className = 'arrow arrow-open';
+        twisty.appendChild(document.createTextNode('\u25bc'));
+      } else {
+        twisty.className = 'arrow arrow-closed';
+        twisty.appendChild(document.createTextNode('\u25ba'));
       }
+
+      details.__summary.__twisty = details.__summary.insertBefore(twisty, details.__summary.firstChild);
+      details.__summary.__twisty.setAttribute('aria-hidden', 'true');
+
     }
 
     // Define a statechange function that updates aria-expanded and style.display
diff --git a/app/assets/stylesheets/app.scss b/app/assets/stylesheets/app.scss
index a6538fc3a..8144e50ba 100644
--- a/app/assets/stylesheets/app.scss
+++ b/app/assets/stylesheets/app.scss
@@ -192,3 +192,25 @@ details summary {
 .tabular-numbers {
   @include core-19($tabular-numbers: true);
 }
+
+summary::-moz-details-marker {
+  display: none;
+}
+summary::-ms-details-marker {
+  display: none;
+}
+summary::-o-details-marker {
+  display: none;
+}
+
+summary::details-marker {
+  display: none;
+}
+
+summary::-webkit-details-marker {
+  display: none;
+}
+
+details .arrow {
+  font-size: 16px;
+}