diff --git a/mainwindow.cpp b/mainwindow.cpp
index 3d72201..78f9b61 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -62,15 +62,15 @@ void MainWindow::initStateMachine()
     mState.start();
 }
 
+void MainWindow::on_btn_startstop_clicked()
+{
+    triggerCssUpdate();
+}
+
 void MainWindow::triggerCssUpdate()
 {
     qDebug() << QTime::currentTime() << "updating CSS"; // rogo: delete
     setStyleSheet(mCss);
 }
 
-void MainWindow::on_btn_startstop_clicked()
-{
-    triggerCssUpdate();
-}
-
 }
diff --git a/mainwindow.ui b/mainwindow.ui
index f1c5053..00a7ee1 100644
--- a/mainwindow.ui
+++ b/mainwindow.ui
@@ -67,6 +67,12 @@
       <property name="text">
        <string>Start</string>
       </property>
+      <property name="autoDefault">
+       <bool>true</bool>
+      </property>
+      <property name="default">
+       <bool>true</bool>
+      </property>
       <property name="on" stdset="0">
        <bool>false</bool>
       </property>
@@ -546,6 +552,7 @@
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <tabstops>
+  <tabstop>btn_startstop</tabstop>
   <tabstop>r_0</tabstop>
   <tabstop>r_11</tabstop>
   <tabstop>r_22</tabstop>
@@ -554,8 +561,7 @@
   <tabstop>r_74</tabstop>
   <tabstop>r_90</tabstop>
   <tabstop>r_120</tabstop>
-  <tabstop>spinBox</tabstop>
-  <tabstop>btn_startstop</tabstop>
+  <tabstop>r_custom</tabstop>
  </tabstops>
  <resources/>
  <connections/>
diff --git a/shutdown2.pro.user b/shutdown2.pro.user
index 8a69f2f..d90bdb9 100644
--- a/shutdown2.pro.user
+++ b/shutdown2.pro.user
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 4.9.2, 2019-08-10T20:38:02. -->
 <qtcreator>
  <data>
   <variable>EnvironmentId</variable>