Add some padding around the main box

CHANGELOG.md

@@ -5,6 +5,9 @@ All notable changes to this project will be documented in this file.
 ### Added
 - Add a preferences window with new-file and dark-theme options.
 
+### Changed
+- Various UI changes.
+
 ## [0.2.2] - 2019-10-10
 ### Added
 - Permit to sort results by name or saving ratio.

src/ui/window.ui

@@ -12,6 +12,11 @@
     <property name="can_focus">False</property>
     <property name="stock">gtk-open</property>
   </object>
+  <object class="GtkImage" id="forward_image">
+    <property name="visible">True</property>
+    <property name="can_focus">False</property>
+    <property name="icon_name">go-next-symbolic</property>
+  </object>
   <template class="ImCompressorWindow" parent="GtkApplicationWindow">
     <property name="can_focus">False</property>
     <property name="default_width">600</property>
@@ -90,6 +95,10 @@
       <object class="GtkBox" id="mainbox">
         <property name="visible">True</property>
         <property name="can_focus">False</property>
+        <property name="margin_left">20</property>
+        <property name="margin_right">20</property>
+        <property name="margin_top">20</property>
+        <property name="margin_bottom">20</property>
         <property name="orientation">vertical</property>
         <child>
           <object class="GtkBox" id="homebox">
@@ -183,9 +192,4 @@
       </object>
     </child>
   </template>
-  <object class="GtkImage" id="forward_image">
-    <property name="visible">True</property>
-    <property name="can_focus">False</property>
-    <property name="icon_name">go-next-symbolic</property>
-  </object>
 </interface>