diff --git a/history.html b/history.html
index ec74d4c..029ca34 100644
--- a/history.html
+++ b/history.html
@@ -142,7 +142,7 @@
 
       .sidebar {
         z-index: 5;
-        width: 50em;
+        width: 40em;
         box-sizing: border-box;
         position: absolute;
         top: 0;
@@ -153,7 +153,7 @@
       }
 
       .sidebar.hidden {
-        left: -50em;
+        left: -40em;
       }
 
       .sidebar .container {