diff --git a/data/ui/Export.ui b/data/ui/Export.ui
index 4a808ec..e6d547a 100644
--- a/data/ui/Export.ui
+++ b/data/ui/Export.ui
@@ -462,41 +462,54 @@
               <object class="GtkFrame" id="frame5">
                 <property name="visible">True</property>
                 <property name="can_focus">False</property>
+                <property name="valign">start</property>
                 <property name="label_xalign">0</property>
                 <property name="shadow_type">out</property>
                 <child>
-                  <object class="GtkBox" id="box_pdf_options">
+                  <object class="GtkAlignment" id="alignement_pdf_options">
                     <property name="visible">True</property>
                     <property name="can_focus">False</property>
+                    <property name="left_padding">12</property>
                     <child>
-                      <object class="GtkLabel" id="label_paper_size">
+                      <object class="GtkBox" id="box_pdf_options">
                         <property name="visible">True</property>
                         <property name="can_focus">False</property>
-                        <property name="label" translatable="yes">Paper size</property>
+                        <property name="margin_top">4</property>
+                        <property name="margin_bottom">4</property>
+                        <child>
+                          <object class="GtkLabel" id="label_paper_size">
+                            <property name="visible">True</property>
+                            <property name="can_focus">False</property>
+                            <property name="margin_left">4</property>
+                            <property name="label" translatable="yes">Paper size</property>
+                          </object>
+                          <packing>
+                            <property name="expand">False</property>
+                            <property name="fill">True</property>
+                            <property name="position">0</property>
+                          </packing>
+                        </child>
+                        <child>
+                          <object class="GtkComboBoxText" id="combobox_paper_size">
+                            <property name="visible">True</property>
+                            <property name="can_focus">False</property>
+                            <property name="margin_left">8</property>
+                            <property name="margin_right">8</property>
+                            <property name="active">0</property>
+                            <property name="active_id">0</property>
+                            <items>
+                              <item translatable="yes">A4</item>
+                              <item translatable="yes">US Letter</item>
+                            </items>
+                          </object>
+                          <packing>
+                            <property name="expand">True</property>
+                            <property name="fill">True</property>
+                            <property name="pack_type">end</property>
+                            <property name="position">1</property>
+                          </packing>
+                        </child>
                       </object>
-                      <packing>
-                        <property name="expand">False</property>
-                        <property name="fill">True</property>
-                        <property name="position">0</property>
-                      </packing>
-                    </child>
-                    <child>
-                      <object class="GtkComboBoxText" id="combobox_paper_size">
-                        <property name="visible">True</property>
-                        <property name="can_focus">False</property>
-                        <property name="active">0</property>
-                        <property name="active_id">0</property>
-                        <items>
-                          <item translatable="yes">A4</item>
-                          <item translatable="yes">US Letter</item>
-                        </items>
-                      </object>
-                      <packing>
-                        <property name="expand">True</property>
-                        <property name="fill">True</property>
-                        <property name="pack_type">end</property>
-                        <property name="position">1</property>
-                      </packing>
                     </child>
                   </object>
                 </child>
@@ -512,6 +525,7 @@
               <packing>
                 <property name="expand">False</property>
                 <property name="fill">True</property>
+                <property name="padding">5</property>
                 <property name="position">1</property>
               </packing>
             </child>
@@ -534,6 +548,7 @@
         <property name="can_focus">True</property>
         <property name="receives_default">True</property>
         <property name="has_tooltip">True</property>
+        <property name="valign">start</property>
         <property name="relief">none</property>
         <property name="uri">https://pandoc.org/MANUAL.html</property>
       </object>