diff --git a/examples/exhibition/main.qml b/examples/exhibition/main.qml
index 6a1196b..cb3fcab 100644
--- a/examples/exhibition/main.qml
+++ b/examples/exhibition/main.qml
@@ -98,7 +98,6 @@ ApplicationWindow {
             model: examplesFiles
             delegate: ItemDelegate {
                 text: modelData.substring(0, modelData.indexOf(".qml"))
-                backgroundVisible: false
                 onClicked: navigation.currentIndex = index
                 checked: navigation.currentIndex === index
             }
diff --git a/examples/qml-inspect/Example_1.qml b/examples/qml-inspect/Example_1.qml
index 6f871e9..12bffc1 100644
--- a/examples/qml-inspect/Example_1.qml
+++ b/examples/qml-inspect/Example_1.qml
@@ -5,7 +5,7 @@
 import QtQuick 2.11
 import org.deepin.dtk 1.0
 
-Rectangle {
+Item {
     MouseArea {
         anchors.fill: parent
         acceptedButtons: Qt.LeftButton | Qt.RightButton
diff --git a/examples/qml-inspect/Example_2.qml b/examples/qml-inspect/Example_2.qml
index f7aa55c..d45c477 100644
--- a/examples/qml-inspect/Example_2.qml
+++ b/examples/qml-inspect/Example_2.qml
@@ -7,7 +7,7 @@ import QtQuick.Window 2.11
 import QtQuick.Layouts 1.11
 import org.deepin.dtk 1.0
 
-Rectangle {
+Item {
     property string iconStr: "data:image/png;base64,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"
 
     RowLayout {
diff --git a/examples/qml-inspect/Example_colorselector.qml b/examples/qml-inspect/Example_colorselector.qml
index 3a76f0a..51b31d6 100644
--- a/examples/qml-inspect/Example_colorselector.qml
+++ b/examples/qml-inspect/Example_colorselector.qml
@@ -5,7 +5,7 @@
 import QtQuick 2.11
 import org.deepin.dtk 1.0
 
-Rectangle {
+Item {
     Label {
         id: changePaletteLabel
         anchors.left: parent.left
diff --git a/examples/qml-inspect/Example_settingsdialog.qml b/examples/qml-inspect/Example_settingsdialog.qml
index 54364d9..e344497 100644
--- a/examples/qml-inspect/Example_settingsdialog.qml
+++ b/examples/qml-inspect/Example_settingsdialog.qml
@@ -6,8 +6,7 @@ import QtQuick 2.0
 import org.deepin.dtk 1.0
 import org.deepin.dtk.settings 1.0 as Settings
 
-Rectangle {
-    border.color: "blue"
+Item {
 
     property list<Settings.SettingsGroup> __groups: [
         Settings.SettingsGroup {