diff --git a/data/ui/book_element.ui b/data/ui/book_element.ui
index 402d96c7..ad157685 100644
--- a/data/ui/book_element.ui
+++ b/data/ui/book_element.ui
@@ -8,10 +8,6 @@
       <object class="GtkBox" id="container_box">
         <property name="focusable">true</property>
         <property name="tooltip-text" translatable="true">Open book overview</property>
-        <property name="margin-start">6</property>
-        <property name="margin-end">6</property>
-        <property name="margin-top">12</property>
-        <property name="margin-bottom">12</property>
         <property name="orientation">vertical</property>
         <property name="spacing">1</property>
         <property name="valign">start</property>
diff --git a/data/ui/main_window.ui b/data/ui/main_window.ui
index b6ad6048..38be7b56 100644
--- a/data/ui/main_window.ui
+++ b/data/ui/main_window.ui
@@ -154,15 +154,15 @@
                                                         <property name="hscroll-policy">minimum</property>
                                                         <property name="child">
                                                           <object class="GtkFlowBox" id="book_box">
-                                                            <property name="margin-top">6</property>
-                                                            <property name="margin-bottom">6</property>
-                                                            <property name="margin-start">6</property>
-                                                            <property name="margin-end">6</property>
+                                                            <property name="margin-top">18</property>
+                                                            <property name="margin-bottom">18</property>
+                                                            <property name="margin-start">18</property>
+                                                            <property name="margin-end">18</property>
                                                             <property name="hexpand">true</property>
-                                                            <property name="vexpand">true</property>
+                                                            <property name="valign">start</property>
                                                             <property name="homogeneous">true</property>
-                                                            <property name="column-spacing">6</property>
-                                                            <property name="row-spacing">3</property>
+                                                            <property name="column-spacing">18</property>
+                                                            <property name="row-spacing">18</property>
                                                             <property name="min-children-per-line">1</property>
                                                             <property name="max-children-per-line">10</property>
                                                             <property name="selection-mode">none</property>