diff --git a/copyparty/web/browser.css b/copyparty/web/browser.css
index f790bffb..89fdb675 100644
--- a/copyparty/web/browser.css
+++ b/copyparty/web/browser.css
@@ -1639,7 +1639,7 @@ input.ssconf_v {
 	overscroll-behavior-y: none;
 	box-shadow: 0 0 1em var(--bg-d2), 0 -1px 0 rgba(128,128,128,0.3);
 	border: 1px solid var(--bg-u3);
-	transition: .15s;
+	transition: width 0.15s;
 }
 #tree,
 html {