Fix for white border on windows

PVEDiscordDark/sass/PVEDiscordDark.css

@@ -421,6 +421,10 @@
   border-right-width: 0;
 }
 
+.x-message-box .x-window-body {
+  background-color: #2c2f33;
+}
+
 .x-viewport {
   background: #23272a;
 }
@@ -602,7 +606,7 @@
 }
 
 .x-component.x-box-item.x-component-default {
-  background: #23272a;
+  background-color: #2c2f33;
 }
 
 .x-component.x-fieldset-header-text.x-component-default {

PVEDiscordDark/sass/x/_component.sass

@@ -1,7 +1,6 @@
 .x-component
 	color: #fff
 	&.x-box-item.x-component-default
-		background: #23272a
+		background-color: #2c2f33
-
 	&.x-fieldset-header-text.x-component-default
 		color: #fff

PVEDiscordDark/sass/x/_window.sass

@@ -41,3 +41,6 @@
 	background: #23272a
 	border-bottom-width: 0
 	border-right-width: 0
+
+.x-message-box .x-window-body
+	background-color: #2c2f33