Increase the margins a bit.

src/main.ui

@@ -6,20 +6,20 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>612</width>
-    <height>412</height>
+    <width>650</width>
+    <height>425</height>
    </rect>
   </property>
   <property name="minimumSize">
    <size>
-    <width>612</width>
-    <height>412</height>
+    <width>650</width>
+    <height>425</height>
    </size>
   </property>
   <property name="maximumSize">
    <size>
-    <width>612</width>
-    <height>412</height>
+    <width>650</width>
+    <height>425</height>
    </size>
   </property>
   <property name="windowTitle">
@@ -30,7 +30,7 @@
     <normaloff>:/images/Lubuntu.png</normaloff>:/images/Lubuntu.png</iconset>
   </property>
   <layout class="QGridLayout" name="gridLayout_2">
-   <item row="0" column="0">
+   <item row="1" column="1">
     <widget class="QWidget" name="mainform" native="true">
      <property name="minimumSize">
       <size>
@@ -496,6 +496,58 @@
      </layout>
     </widget>
    </item>
+   <item row="2" column="1">
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>40</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+   <item row="1" column="2">
+    <spacer name="horizontalSpacer">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>40</width>
+       <height>20</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+   <item row="1" column="0">
+    <spacer name="horizontalSpacer_2">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>40</width>
+       <height>20</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+   <item row="0" column="1">
+    <spacer name="verticalSpacer_2">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>40</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
   </layout>
  </widget>
  <resources>