From 2f51abe0813d825fa2a508c206c08c5addf5f478 Mon Sep 17 00:00:00 2001
From: Rene <king-sora@hotmail.de>
Date: Wed, 21 Apr 2021 00:36:21 +0200
Subject: [PATCH] optimize observers with css containment

---
 packages/overlayscrollbars/src/styles/sizeobserver.scss    | 1 +
 packages/overlayscrollbars/src/styles/trinsicobserver.scss | 1 +
 2 files changed, 2 insertions(+)

diff --git a/packages/overlayscrollbars/src/styles/sizeobserver.scss b/packages/overlayscrollbars/src/styles/sizeobserver.scss
index 52731eb..a9924fc 100644
--- a/packages/overlayscrollbars/src/styles/sizeobserver.scss
+++ b/packages/overlayscrollbars/src/styles/sizeobserver.scss
@@ -26,6 +26,7 @@ $scrollbar-cushion: 100px;
   height: 100%;
   width: 100%;
   z-index: -1;
+  contain: strict;
 }
 
 .os-size-observer-appear {
diff --git a/packages/overlayscrollbars/src/styles/trinsicobserver.scss b/packages/overlayscrollbars/src/styles/trinsicobserver.scss
index ec2dd46..5c7e936 100644
--- a/packages/overlayscrollbars/src/styles/trinsicobserver.scss
+++ b/packages/overlayscrollbars/src/styles/trinsicobserver.scss
@@ -11,6 +11,7 @@
   z-index: -1;
   height: 0;
   top: calc(-100% + 1px);
+  contain: strict;
 
   &:not(:empty) {
     height: calc(100% + 1px);