fix use alpha param of rgb instead of rgba

Author: fabiankaegy

src/wp-admin/css/common.css

@@ -787,7 +787,7 @@ img.emoji {
 }
 
 .stuffbox .hndle {
-	border-bottom: 1px solid rgba(0, 0, 0, 0.1);
+	border-bottom: 1px solid rgb(0, 0, 0, 0.1);
 }
 
 .quicktags {
@@ -2156,7 +2156,7 @@ html.wp-toolbar {
 	display: flex;
 	align-items: center;
 	justify-content: space-between;
-	border-bottom: 1px solid rgba(0, 0, 0, 0.1);
+	border-bottom: 1px solid rgb(0, 0, 0, 0.1);
 }
 
 .postbox-header .hndle {
@@ -2209,7 +2209,7 @@ html.wp-toolbar {
 	border: 2px solid var(--wp-admin-theme-color);
 	border-radius: 8px;
 	margin-bottom: 20px;
-	background: rgba(var(--wp-admin-theme-color--rgb), 0.04);
+	background: rgb(var(--wp-admin-theme-color--rgb), 0.04);
 }
 
 .postbox,
@@ -2218,7 +2218,7 @@ html.wp-toolbar {
 	padding: 0;
 	line-height: 1;
 	background: #ffffff;
-	border: 1px solid rgba(0, 0, 0, 0.1);
+	border: 1px solid rgb(0, 0, 0, 0.1);
 	border-radius: 0;
 }
 

src/wp-admin/css/dashboard.css

@@ -68,7 +68,7 @@
 }
 
 #dashboard-widgets .postbox-container .empty-container {
-	outline: 2px dashed rgba(0, 0, 0, 0.15);
+	outline: 2px dashed rgb(0, 0, 0, 0.15);
 	outline-offset: -2px;
 	border-radius: 8px;
 	height: 250px;
@@ -77,13 +77,13 @@
 /* Only highlight drop zones when dragging. */
 .is-dragging-metaboxes #dashboard-widgets .meta-box-sortables {
 	border-radius: 8px;
-	background: rgba(var(--wp-admin-theme-color--rgb), 0.04);
+	background: rgb(var(--wp-admin-theme-color--rgb), 0.04);
 	min-height: 100px;
 }
 
 .is-dragging-metaboxes #dashboard-widgets .postbox-container .empty-container {
-	outline: 2px dashed rgba(0, 0, 0, 0.15);
-	background: rgba(0, 0, 0, 0.01);
+	outline: 2px dashed rgb(0, 0, 0, 0.15);
+	background: rgb(0, 0, 0, 0.01);
 }
 
 #dashboard-widgets .postbox-container .empty-container:after {
@@ -141,7 +141,7 @@
 	overflow: auto;
 	margin: 16px 0;
 	background-color: #151515;
-	border: 1px solid rgba(0, 0, 0, 0.1);
+	border: 1px solid rgb(0, 0, 0, 0.1);
 	border-radius: 8px;
 	font-size: 14px;
 	line-height: 1.3;

src/wp-admin/css/edit.css

@@ -175,7 +175,7 @@ body.post-type-wp_navigation .inline-edit-status {
 /* Only highlight drop zones when dragging and only in the 2 columns layout. */
 .is-dragging-metaboxes .metabox-holder .postbox-container .meta-box-sortables {
 	border-radius: 8px;
-	background: rgba(var(--wp-admin-theme-color--rgb), 0.04);
+	background: rgb(var(--wp-admin-theme-color--rgb), 0.04);
 	/*
 	 * This min-height is meant to limit jumpiness while dragging. It's equivalent
 	 * to the minimum height of the sortable-placeholder which is given by the height

src/wp-admin/css/forms.css

@@ -1050,7 +1050,7 @@ table.form-table td .updated p {
 	padding: 16px 24px;
 	min-width: 255px;
 	max-width: 520px;
-	border: 1px solid rgba(0, 0, 0, 0.1);
+	border: 1px solid rgb(0, 0, 0, 0.1);
 	border-radius: 8px;
 	background: #ffffff;
 	box-sizing: border-box;

src/wp-admin/css/list-tables.css

@@ -1488,7 +1488,7 @@ ul.cat-checklist input[name="post_category[]"]:indeterminate::before {
 	width: 48.5%;
 	width: calc( 50% - 8px );
 	background-color: #ffffff;
-	border: 1px solid rgba(0, 0, 0, 0.1);
+	border: 1px solid rgb(0, 0, 0, 0.1);
 	border-radius: 8px;
 	box-sizing: border-box;
 	overflow: hidden;
@@ -1672,7 +1672,7 @@ div.action-links,
 	clear: both;
 	padding: 16px;
 	background-color: #f6f7f7;
-	border-top: 1px solid rgba(0, 0, 0, 0.1);
+	border-top: 1px solid rgb(0, 0, 0, 0.1);
 	overflow: hidden;
 }
 

src/wp-admin/css/themes.css

@@ -65,7 +65,7 @@ body.js .theme-browser.search-loading {
 	position: relative;
 	width: 30.6%;
 	background: #ffffff;
-	border: 1px solid rgba(0, 0, 0, 0.1);
+	border: 1px solid rgb(0, 0, 0, 0.1);
 	border-radius: 8px;
 	box-sizing: border-box;
 	overflow: hidden;
@@ -86,7 +86,7 @@ body.js .theme-browser.search-loading {
 	height: 18px;
 	margin: 0;
 	padding: 16px;
-	border-top: 1px solid rgba(0, 0, 0, 0.1);
+	border-top: 1px solid rgb(0, 0, 0, 0.1);
 	overflow: hidden;
 	white-space: nowrap;
 	text-overflow: ellipsis;