From f14413989ce226b8f6d726328d6a5c06c9de589a Mon Sep 17 00:00:00 2001
From: Calixte Denizet <calixte.denizet@gmail.com>
Date: Sat, 28 Jan 2023 16:23:23 +0100
Subject: [PATCH] Remove the transition when displaying the sidebar when the
 user prefers reduced motion (bug 1813138)

In Firefox, it can be easily testesd in setting the pref `ui.prefersReducedMotion` to 1.
---
 web/viewer.css | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/web/viewer.css b/web/viewer.css
index b23f1850a..3a79aa4f2 100644
--- a/web/viewer.css
+++ b/web/viewer.css
@@ -189,6 +189,12 @@
   }
 }
 
+@media screen and (prefers-reduced-motion: reduce) {
+  :root {
+    --sidebar-transition-duration: 0;
+  }
+}
+
 * {
   padding: 0;
   margin: 0;