diff --git a/src/views/PDFView.vue b/src/views/PDFView.vue
index dfdedfc8..19a14f9b 100644
--- a/src/views/PDFView.vue
+++ b/src/views/PDFView.vue
@@ -174,8 +174,8 @@ export default {
 <style lang="scss" scoped>
 iframe {
 	width: 100%;
-	height: calc(100vh - var(--header-height));
-	margin-top: var(--header-height);
+	height: 100%;
+	position: relative;
 }
 
 </style>