diff --git a/src/wp-admin/css/common.css b/src/wp-admin/css/common.css
index 53520b82cb..52ebfe48a4 100644
--- a/src/wp-admin/css/common.css
+++ b/src/wp-admin/css/common.css
@@ -123,7 +123,6 @@
 .ui-helper-hidden-accessible {
 	border: 0;
 	clip: rect(1px, 1px, 1px, 1px);
-	-webkit-clip-path: inset(50%);
 	clip-path: inset(50%);
 	height: 1px;
 	margin: -1px;
@@ -3020,6 +3019,7 @@ div.action-links {
 }
 
 @media print,
+	(-webkit-min-device-pixel-ratio: 1.25),
 	(min-resolution: 120dpi) {
 
 	#TB_window.plugin-details-modal.thickbox-loading:before {
@@ -3174,6 +3174,7 @@ img {
 	font-family: Consolas, Monaco, monospace;
 	font-size: 13px;
 	background: #f6f7f7;
+	-o-tab-size: 4;
 	tab-size: 4;
 }
 
@@ -3762,6 +3763,7 @@ img {
  * HiDPI Displays
  */
 @media print,
+  (-webkit-min-device-pixel-ratio: 1.25),
   (min-resolution: 120dpi) {
 	/* Back-compat for pre-3.8 */
 	div.star-holder,
diff --git a/src/wp-admin/css/customize-controls.css b/src/wp-admin/css/customize-controls.css
index 3548f12e9c..9422d0cc8c 100644
--- a/src/wp-admin/css/customize-controls.css
+++ b/src/wp-admin/css/customize-controls.css
@@ -1604,6 +1604,7 @@ p.customize-section-description {
 	font-family: Consolas, Monaco, monospace;
 	font-size: 12px;
 	padding: 6px 8px;
+	-o-tab-size: 2;
 	tab-size: 2;
 }
 .customize-control-code_editor textarea,
diff --git a/src/wp-admin/css/deprecated-media.css b/src/wp-admin/css/deprecated-media.css
index 36fafeb65f..359fc59e3c 100644
--- a/src/wp-admin/css/deprecated-media.css
+++ b/src/wp-admin/css/deprecated-media.css
@@ -404,6 +404,7 @@ table.not-image tr.image-only {
  * HiDPI Displays
  */
 @media print,
+  (-webkit-min-device-pixel-ratio: 1.25),
   (min-resolution: 120dpi) {
 
 	.image-align-none-label {
diff --git a/src/wp-admin/css/edit.css b/src/wp-admin/css/edit.css
index f30e669868..f808cf1c7f 100644
--- a/src/wp-admin/css/edit.css
+++ b/src/wp-admin/css/edit.css
@@ -1688,6 +1688,7 @@ table.links-table {
  * HiDPI Displays
  */
 @media print,
+  (-webkit-min-device-pixel-ratio: 1.25),
   (min-resolution: 120dpi) {
 	#content-resize-handle,
 	#post-body .wp_themeSkin .mceStatusbar a.mceResize {
diff --git a/src/wp-admin/css/install.css b/src/wp-admin/css/install.css
index f42791dec8..ab0f0ed3c0 100644
--- a/src/wp-admin/css/install.css
+++ b/src/wp-admin/css/install.css
@@ -354,7 +354,6 @@ body.language-chooser {
 .screen-reader-text {
 	border: 0;
 	clip: rect(1px, 1px, 1px, 1px);
-	-webkit-clip-path: inset(50%);
 	clip-path: inset(50%);
 	height: 1px;
 	margin: -1px;
@@ -391,6 +390,7 @@ body.language-chooser {
  * HiDPI Displays
  */
 @media print,
+  (-webkit-min-device-pixel-ratio: 1.25),
   (min-resolution: 120dpi) {
 
 	.spinner {
diff --git a/src/wp-admin/css/list-tables.css b/src/wp-admin/css/list-tables.css
index d9a573ae8d..43da93c060 100644
--- a/src/wp-admin/css/list-tables.css
+++ b/src/wp-admin/css/list-tables.css
@@ -1927,7 +1927,6 @@ div.action-links,
 	/* Show comment bubble as text instead */
 	.post-com-count .screen-reader-text {
 		position: static;
-		-webkit-clip-path: none;
 		clip-path: none;
 		width: auto;
 		height: auto;
diff --git a/src/wp-admin/css/login.css b/src/wp-admin/css/login.css
index fe790f0b42..53171ca23c 100644
--- a/src/wp-admin/css/login.css
+++ b/src/wp-admin/css/login.css
@@ -408,7 +408,6 @@ body.interim-login {
 .screen-reader-text span {
 	border: 0;
 	clip: rect(1px, 1px, 1px, 1px);
-	-webkit-clip-path: inset(50%);
 	clip-path: inset(50%);
 	height: 1px;
 	margin: -1px;
diff --git a/src/wp-admin/css/media.css b/src/wp-admin/css/media.css
index 3a5b3eb4fe..5eea3ee167 100644
--- a/src/wp-admin/css/media.css
+++ b/src/wp-admin/css/media.css
@@ -1272,6 +1272,7 @@ audio, video {
  * HiDPI Displays
  */
 @media print,
+  (-webkit-min-device-pixel-ratio: 1.25),
   (min-resolution: 120dpi) {
 	.imgedit-wait:before {
 		background-image: url(../images/spinner-2x.gif);
diff --git a/src/wp-admin/css/nav-menus.css b/src/wp-admin/css/nav-menus.css
index 4fd178dbb0..5e8d0a8cc2 100644
--- a/src/wp-admin/css/nav-menus.css
+++ b/src/wp-admin/css/nav-menus.css
@@ -174,7 +174,6 @@ input.bulk-select-switcher:focus + .bulk-select-button-label {
 }
 
 .bulk-actions input.menu-items-delete {
-	-webkit-appearance: none;
 	appearance: none;
 	font-size: inherit;
 	border: 0;
@@ -704,7 +703,6 @@ body.menu-max-depth-11 { min-width: 1280px !important; }
 
 .no-js.nav-menus-php .item-edit .screen-reader-text {
 	position: static;
-	-webkit-clip-path: none;
 	clip-path: none;
 	width: auto;
 	height: auto;
diff --git a/src/wp-admin/css/revisions.css b/src/wp-admin/css/revisions.css
index 46cf263b5e..e523ee431c 100644
--- a/src/wp-admin/css/revisions.css
+++ b/src/wp-admin/css/revisions.css
@@ -558,6 +558,7 @@ div.revisions-controls > .wp-slider > .ui-slider-handle {
  * HiDPI Displays
  */
 @media print,
+  (-webkit-min-device-pixel-ratio: 1.25),
   (min-resolution: 120dpi) {
 	.revision-tick.completed-false {
 		background-image: url(../images/spinner-2x.gif);
diff --git a/src/wp-admin/css/themes.css b/src/wp-admin/css/themes.css
index 268cc558f3..07f3356501 100644
--- a/src/wp-admin/css/themes.css
+++ b/src/wp-admin/css/themes.css
@@ -1938,6 +1938,7 @@ body.full-overlay-active {
  * HiDPI Displays
  */
 @media print,
+  (-webkit-min-device-pixel-ratio: 1.25),
   (min-resolution: 120dpi) {
 	.wp-full-overlay .collapse-sidebar-arrow {
 		background-image: url(../images/arrows-2x.png);
diff --git a/src/wp-includes/css/admin-bar.css b/src/wp-includes/css/admin-bar.css
index 8f73274b03..9ae5bb0d1a 100644
--- a/src/wp-includes/css/admin-bar.css
+++ b/src/wp-includes/css/admin-bar.css
@@ -705,7 +705,6 @@ html:lang(he-il) .rtl #wpadminbar * {
 #wpadminbar .screen-reader-text span {
 	border: 0;
 	clip: rect(1px, 1px, 1px, 1px);
-	-webkit-clip-path: inset(50%);
 	clip-path: inset(50%);
 	height: 1px;
 	margin: -1px;
@@ -799,7 +798,6 @@ html:lang(he-il) .rtl #wpadminbar * {
 	#wpadminbar .ab-label {
 		border: 0;
 		clip: rect(1px, 1px, 1px, 1px);
-		-webkit-clip-path: inset(50%);
 		clip-path: inset(50%);
 		height: 1px;
 		margin: -1px;
diff --git a/src/wp-includes/css/editor.css b/src/wp-includes/css/editor.css
index 969b880873..c445a32b43 100644
--- a/src/wp-includes/css/editor.css
+++ b/src/wp-includes/css/editor.css
@@ -1845,6 +1845,7 @@ html:lang(he-il) .rtl .quicktags-toolbar input {
 
 /* HiDPI */
 @media print,
+  (-webkit-min-device-pixel-ratio: 1.25),
   (min-resolution: 120dpi) {
 	.wp-media-buttons .add_media span.wp-media-buttons-icon {
 		background: none;
diff --git a/src/wp-includes/css/media-views.css b/src/wp-includes/css/media-views.css
index 2f046cecb7..b714247f44 100644
--- a/src/wp-includes/css/media-views.css
+++ b/src/wp-includes/css/media-views.css
@@ -2522,7 +2522,6 @@
 	/* Visually hide the menu heading keeping it available to assistive technologies. */
 	.media-frame-menu-heading {
 		clip: rect(1px, 1px, 1px, 1px);
-		-webkit-clip-path: inset(50%);
 		clip-path: inset(50%);
 		height: 1px;
 		overflow: hidden;
@@ -2905,6 +2904,7 @@
  * HiDPI Displays
  */
 @media print,
+  (-webkit-min-device-pixel-ratio: 1.25),
   (min-resolution: 120dpi) {
 
 	.wp-core-ui .media-modal-icon {
diff --git a/src/wp-includes/css/wp-auth-check.css b/src/wp-includes/css/wp-auth-check.css
index 42f623e8e1..8994f4933a 100644
--- a/src/wp-includes/css/wp-auth-check.css
+++ b/src/wp-includes/css/wp-auth-check.css
@@ -68,6 +68,7 @@
 }
 
 @media print,
+  (-webkit-min-device-pixel-ratio: 1.25),
   (min-resolution: 120dpi) {
 
 	#wp-auth-check-form.loading:before {
diff --git a/src/wp-includes/css/wp-embed-template.css b/src/wp-includes/css/wp-embed-template.css
index c1f1cc5c84..af844cfec2 100644
--- a/src/wp-includes/css/wp-embed-template.css
+++ b/src/wp-includes/css/wp-embed-template.css
@@ -11,7 +11,6 @@ body {
 .screen-reader-text {
 	border: 0;
 	clip: rect(1px, 1px, 1px, 1px);
-	-webkit-clip-path: inset(50%);
 	clip-path: inset(50%);
 	height: 1px;
 	margin: -1px;