try that out

components/StyledPopupWindow.qml

@@ -6,9 +6,10 @@ import Quickshell.Hyprland
 PopupWindow {
     id: root
 
-    implicitWidth: background.implicitWidth
-    implicitHeight: background.implicitHeight
+    implicitWidth: contentItem.children.reduce((prev, child) => Math.max(prev, child.width), 0)
+    implicitHeight: contentItem.children.reduce((prev, child) => prev + child.height, 0)
     color: "transparent"
+    contentItem.focus: visible
 
     function open() {
         visible = true;
@@ -18,8 +19,10 @@ PopupWindow {
         visible = false;
     }
 
+    // WlrLayershell.layer: WlrLayer.Top
+    // WlrLayershell.keyboardFocus: root.visible ? WlrKeyboardFocus.OnDemand : WlrKeyboardFocus.None
     HyprlandFocusGrab {
-        id: grab
+        active: root.visible
         windows: [root]
         onCleared: {
             root.close();
@@ -28,9 +31,7 @@ PopupWindow {
 
     Rectangle {
         id: background
-        anchors.centerIn: root
-        implicitWidth: root.contentItem.children.reduce((prev, child) => Math.max(prev, child.width), 0)
-        implicitHeight: root.contentItem.children.reduce((prev, child) => prev + child.height, 0)
+        anchors.fill: parent
         color: Theme.palette.base200
         radius: 8
     }

modules/Shell.qml

@@ -78,7 +78,11 @@ Variants {
         Launcher {}
         Pomodoro {}
         PowerMenu {}
-        Storybook {}
+        Storybook {
+            anchor.window: topWindow
+            anchor.rect.x: topWindow.width / 2 - width / 2
+            anchor.rect.y: topWindow.height / 4
+        }
         Drawers {}
     }
 }

modules/storybook/Storybook.qml

@@ -4,8 +4,6 @@ import qs.components
 import qs.config
 import qs.constants
 import qs.services
-import Quickshell.Hyprland
-import Quickshell.Wayland
 import QtQuick
 import QtQuick.Controls
 import QtQuick.Layouts
@@ -14,24 +12,6 @@ StyledPopupWindow {
     id: root
 
     visible: Visibility.storybook
-    implicitWidth: rect.width
-    implicitHeight: rect.height
-
-    WlrLayershell.layer: WlrLayer.Top
-    WlrLayershell.keyboardFocus: root.visible ? WlrKeyboardFocus.OnDemand : WlrKeyboardFocus.None
-
-    HyprlandFocusGrab {
-        active: Visibility.storybook
-        windows: [root]
-        onCleared: {
-            Visibility.storybook = false;
-        }
-    }
-
-    StyledWrapperRectangle {
-        id: rect
-
-        margin: 48
 
     GridLayout {
         id: grid
@@ -196,7 +176,6 @@ StyledPopupWindow {
             }
         }
     }
-    }
 
     StyledDrawer {
         id: drawer