diff --git a/apps/readest-app/src/styles/globals.css b/apps/readest-app/src/styles/globals.css
index 2ec32482..7feefbf8 100644
--- a/apps/readest-app/src/styles/globals.css
+++ b/apps/readest-app/src/styles/globals.css
@@ -74,7 +74,7 @@ body {
 }
 
 .full-height {
-  height: -webkit-fill-available;
+  height: 100vh;
 }
 
 @supports (height: 100dvh) {