diff --git a/src/ui/gemgraph.ui b/src/ui/gemgraph.ui
index 3aaa5d8..ddf336b 100644
--- a/src/ui/gemgraph.ui
+++ b/src/ui/gemgraph.ui
@@ -4,8 +4,8 @@
   <!-- interface-name gem-graph.ui -->
   <requires lib="gtk" version="4.6"/>
   <template class="GemGraphClientWindow" parent="GtkApplicationWindow">
-    <property name="default-height">720</property>
-    <property name="default-width">1080</property>
+    <property name="default-height">900</property>
+    <property name="default-width">1400</property>
     <property name="icon-name">application-x-executable</property>
     <property name="title">GemGraph 0.1.0</property>
     <style>
@@ -51,12 +51,15 @@
                       <object class="GtkBox">
                         <property name="orientation">vertical</property>
                         <child>
-                          <object class="GtkLabel" id="run_controls_label">
-                            <property name="justify">center</property>
+                          <object class="GtkBox" id="run_controls">
                             <property name="margin-top">50</property>
                             <property name="margin-bottom">50</property>
-                            <property name="label" translatable="yes">&lt;b&gt;run_controls_label&lt;/b&gt;</property>
-                            <property name="use-markup">True</property>
+                            <property name="orientation">horizontal</property>
+                            <child>
+                              <object class="GtkToggleButton" id="run_play_control">
+                                <property name="icon-name"></property>
+                              </object>
+                            </child>
                           </object>
                         </child>
                         <child>
diff --git a/src/ui/window.c b/src/ui/window.c
index 3ba7ba3..4d7c8b1 100644
--- a/src/ui/window.c
+++ b/src/ui/window.c
@@ -282,7 +282,7 @@ void ui_toggle_sidebar(void)
     if (position != 0) {
         gtk_paned_set_position(window->main_paned, 0);
     } else {
-        gtk_paned_set_position(window->main_paned, 300);
+        gtk_paned_set_position(window->main_paned, 400);
     }
 }