diff --git a/core/themes/seven/css/components/system-status-report.css b/core/themes/seven/css/components/system-status-report.css
index 5a4bb9a..2bab073 100644
--- a/core/themes/seven/css/components/system-status-report.css
+++ b/core/themes/seven/css/components/system-status-report.css
@@ -96,8 +96,6 @@
   }
 }

-
-
 .system-status-report__entry {
   border: 0;
   border-top: 1px solid #ccc;
@@ -106,14 +104,32 @@
 .system-status-report__entry:last-of-type {
   border-bottom: 1px solid #bebfb9;
 }
+/* Account for native and poly-filled details element */
 .system-status-report__status-title {
   position: relative;
   padding: 1em 1em 1em 3em;
   box-sizing: border-box;
 }
-[dir="rtl"] .system-status-report__status-title {
+a.details-title {
+  color: inherit;
+  text-transform: none;
+}
+html:not(.details) .system-status-report__status-title {
+  padding-left: 0;
+}
+.system-status-report__status-title .details-title {
+  padding-left: 3em;
+}
+[dir="rtl"] a.details-title {
+  padding-right: 3em;
+  padding-left: 0;
+}
+html[dir="rtl"].details  .system-status-report__status-title {
   padding: 1em 3em 1em 1em;
 }
+.collapse-processed > .system-status-report__status-title:before {
+  float: right;
+}
 .system-status-report__status-title::-webkit-details-marker {
   float: right;
 }
@@ -124,7 +140,8 @@
 .system-status-report details > summary:first-child {
   display: block;
 }
-.system-status-report__status-icon:before {
+.system-status-report__status-title .details-title:before,
+.details .system-status-report__status-icon:before {
   content: "";
   background-repeat: no-repeat;
   background-size: contain;
@@ -138,27 +155,25 @@
   vertical-align: top;
   margin-right: 10px;
 }
-[dir="rtl"] .system-status-report__status-icon:before  {
+[dir="rtl"] .system-status-report__status-title .details-title:before,
+html[dir="rtl"].details .system-status-report__status-title:before {
   left: auto;
   right: 10px;
 }
-.system-status-report__status-icon--error:before {
+.system-status-report__status-icon--error .details-title:before,
+.details .system-status-report__status-icon--error:before {
   background-image: url(../../../stable/images/core/icons/e32700/error.svg);
 }
-.system-status-report__status-icon--warning:before {
+.system-status-report__status-icon--warning .details-title:before,
+.details .system-status-report__status-icon--warning:before {
   background-image: url(../../../stable/images/core/icons/e29700/warning.svg);
 }

-a.details-title {
-  color: inherit;
-  text-transform: none;
-}
-
 .system-status-report__entry__value {
   box-sizing: border-box;
   padding: 0 1em 1em 3em;
 }
-[dir="rtl"] ..system-status-report__entry__value {
+[dir="rtl"] .system-status-report__entry__value {
   padding: 0 3em 1em 1em;
 }

@@ -178,6 +193,9 @@ a.details-title {
     width: 25%;
     float: left;
   }
+  .collapse-processed > .system-status-report__status-title:before {
+    display: none;
+  }
   .system-status-report__status-title::-webkit-details-marker {
     display: none;
   }