From 3c15e75d326cbe3a0c28ae0a6c0070f25d6a47f7 Mon Sep 17 00:00:00 2001
From: Alex Pott <alex.a.pott@googlemail.com>
Date: Mon, 1 Oct 2018 16:40:58 +0100
Subject: [PATCH] Issue #2975388 by NickWilde, idebr: Replace Firefox
 @-moz-document url-prefix() css selector, since its support is being removed

---
 core/.stylelintrc.json                     | 5 ++++-
 core/misc/normalize-fixes.css              | 2 +-
 core/themes/bartik/css/components/form.css | 2 +-
 core/themes/seven/css/components/form.css  | 4 ++--
 4 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/core/.stylelintrc.json b/core/.stylelintrc.json
index d9d0ede9f5..87d1529534 100644
--- a/core/.stylelintrc.json
+++ b/core/.stylelintrc.json
@@ -11,7 +11,10 @@
     "no-duplicate-selectors": null,
     "no-unknown-animations": true,
     "media-feature-name-no-unknown": [true, {
-      "ignoreMediaFeatureNames": ["prefers-reduced-motion"]
+      "ignoreMediaFeatureNames": [
+        "prefers-reduced-motion",
+        "min--moz-device-pixel-ratio"
+      ]
     }],
     "number-leading-zero": "always",
     "plugin/no-browser-hacks": [true, {
diff --git a/core/misc/normalize-fixes.css b/core/misc/normalize-fixes.css
index 9df0fa0aed..b400831192 100644
--- a/core/misc/normalize-fixes.css
+++ b/core/misc/normalize-fixes.css
@@ -6,7 +6,7 @@
 /**
  * Fix problem with details/summary lines missing the drop arrows.
  */
-@-moz-document url-prefix() {
+@media (min--moz-device-pixel-ratio: 0) {
   summary {
     display: list-item;
   }
diff --git a/core/themes/bartik/css/components/form.css b/core/themes/bartik/css/components/form.css
index 03dc6e9b17..e815233fbf 100644
--- a/core/themes/bartik/css/components/form.css
+++ b/core/themes/bartik/css/components/form.css
@@ -23,7 +23,7 @@ fieldset {
  * @todo remove once this Mozilla bug is fixed.
  * See https://bugzilla.mozilla.org/show_bug.cgi?id=504622
  */
-@-moz-document url-prefix() {
+@media (min--moz-device-pixel-ratio: 0) {
   fieldset {
     display: table-cell;
   }
diff --git a/core/themes/seven/css/components/form.css b/core/themes/seven/css/components/form.css
index 44016abefc..68dedf1745 100644
--- a/core/themes/seven/css/components/form.css
+++ b/core/themes/seven/css/components/form.css
@@ -19,7 +19,7 @@ fieldset:not(.fieldgroup) {
  * @todo remove once this Mozilla bug is fixed.
  * See https://bugzilla.mozilla.org/show_bug.cgi?id=504622
  */
-@-moz-document url-prefix() {
+@media (min--moz-device-pixel-ratio: 0) {
   fieldset:not(.fieldgroup) {
     display: table-cell;
   }
@@ -41,7 +41,7 @@ fieldset:not(.fieldgroup) > legend {
  * @todo remove once this Mozilla bug is fixed.
  * See https://bugzilla.mozilla.org/show_bug.cgi?id=504622
  */
-@-moz-document url-prefix() {
+@media (min--moz-device-pixel-ratio: 0) {
   .fieldgroup {
     display: table-cell;
   }
-- 
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