为部分页面添加半透明背景遮罩 (#3730)

HMCL/src/main/java/org/jackhuang/hmcl/ui/versions/AdvancedVersionSettingPage.java

@@ -59,6 +59,8 @@ public final class AdvancedVersionSettingPage extends StackPane implements Decor
                 versionId == null ? i18n("settings.advanced") : i18n("settings.advanced.title", versionId)
         ));
 
+        this.getStyleClass().add("gray-background");
+
         ScrollPane scrollPane = new ScrollPane();
         scrollPane.setFitToHeight(true);
         scrollPane.setFitToWidth(true);

HMCL/src/main/java/org/jackhuang/hmcl/ui/versions/WorldInfoPage.java

@@ -83,6 +83,8 @@ public final class WorldInfoPage extends SpinnerPane implements DecoratorPage {
         this.world = world;
         this.stateProperty = new SimpleObjectProperty<>(State.fromTitle(i18n("world.info.title", world.getWorldName())));
 
+        this.getStyleClass().add("gray-background");
+
         this.setLoading(true);
         Task.supplyAsync(this::loadWorldInfo)
                 .whenComplete(Schedulers.javafx(), ((result, exception) -> {