diff --git a/resources/themes/book.yml b/resources/themes/book.yml
index af5a300..baa9315 100644
--- a/resources/themes/book.yml
+++ b/resources/themes/book.yml
@@ -5,7 +5,9 @@ footer:
       content: '{section-or-chapter-title} | {page-number}'
   verso:
     left:
-      content: '{page-number} | {chapter-title}'
+      content: '{page-number} | {part-title} | {chapter-title}'
+page:
+  margin: [1.0in, 1.0in, 1.0in, 1.0in]
 admonition:
   icon:
     caution: