diff --git a/assets/_custom.scss b/assets/_custom.scss
index 067f94c..aebffa1 100644
--- a/assets/_custom.scss
+++ b/assets/_custom.scss
@@ -1,3 +1,7 @@
+html {
+	scrollbar-gutter: stable;
+}
+
 .book-page {
 	box-shadow: 0 0 1.5rem rgba(0, 0, 0, 0.15);
 	min-height: 100vh;