Used Universal Theme to fix QtQuick Controls

client/ui/qml/Controls/BasicButtonType.qml

@@ -3,8 +3,11 @@ import QtQuick.Controls
 
 Button {
     id: root
-    hoverEnabled: true
     property bool containsMouse: hovered
+    hoverEnabled: true
+    flat: true
+    highlighted: false
+
     MouseArea {
         id: mouseArea
         anchors.fill: parent

client/ui/qml/main.qml

@@ -2,12 +2,12 @@ import QtQuick
 import QtQuick.Window
 import QtQuick.Controls
 import QtQuick.Layouts
-import QtQuick.Controls.Material
 import PageEnum 1.0
 import PageType 1.0
 import Qt.labs.platform
 import Qt.labs.folderlistmodel
 import QtQuick.Dialogs
+import QtQuick.Controls.Universal 2.12
 import "./"
 import "Controls"
 import "Pages"