diff --git a/app/layout/aside_feed.phtml b/app/layout/aside_feed.phtml
index 4745b6273..410a0ce60 100644
--- a/app/layout/aside_feed.phtml
+++ b/app/layout/aside_feed.phtml
@@ -27,7 +27,7 @@
 
 	<form id="mark-read-aside" method="post">
 	<input type="hidden" name="_csrf" value="<?= FreshRSS_Auth::csrfToken() ?>" />
-	<ul id="sidebar" class="tree">
+	<ul id="sidebar" class="tree scrollbar-thin">
 		<li class="tree-folder category all<?= FreshRSS_Context::isCurrentGet('a') ? ' active' : '' ?>">
 			<div class="tree-folder-title">
 				<?= _i('all') ?> <a class="title" data-unread="<?= format_number(FreshRSS_Context::$total_unread) ?>" href="<?=
diff --git a/p/themes/base-theme/frss.css b/p/themes/base-theme/frss.css
index 18baaada5..b3a631760 100644
--- a/p/themes/base-theme/frss.css
+++ b/p/themes/base-theme/frss.css
@@ -941,38 +941,32 @@ li.drag-hover {
 /*=== Scrollbar */
 
 @supports (scrollbar-width: thin) {
-	#sidebar,
 	.scrollbar-thin {
 		scrollbar-color: var(--frss-scrollbar-handle) var(--frss-scrollbar-track);
 		scrollbar-width: thin;
 	}
 
-	#sidebar:hover,
 	.scrollbar-thin:hover {
 		scrollbar-color: var(--frss-scrollbar-handle-hover) var(--frss-scrollbar-track-hover);
 	}
 }
 
 @supports not (scrollbar-width: thin) {
-	#sidebar::-webkit-scrollbar,
 	.scrollbar-thin::-webkit-scrollbar {
 		background-color: var(--frss-scrollbar-track);
 		width: 8px;
 	}
 
-	#sidebar:hover::-webkit-scrollbar,
 	.scrollbar-thin:hover::-webkit-scrollbar {
 		background-color: var(--frss-scrollbar-track-hover);
 	}
 
-	#sidebar::-webkit-scrollbar-thumb,
 	.scrollbar-thin::-webkit-scrollbar-thumb {
 		background-color: var(--frss-scrollbar-handle);
 		display: unset;
 		border-radius: 5px;
 	}
 
-	#sidebar:hover::-webkit-scrollbar-thumb,
 	.scrollbar-thin:hover::-webkit-scrollbar-thumb {
 		background-color: var(--frss-scrollbar-handle-hover);
 	}
diff --git a/p/themes/base-theme/frss.rtl.css b/p/themes/base-theme/frss.rtl.css
index 1b22fc5ff..759a5a834 100644
--- a/p/themes/base-theme/frss.rtl.css
+++ b/p/themes/base-theme/frss.rtl.css
@@ -941,38 +941,32 @@ li.drag-hover {
 /*=== Scrollbar */
 
 @supports (scrollbar-width: thin) {
-	#sidebar,
 	.scrollbar-thin {
 		scrollbar-color: var(--frss-scrollbar-handle) var(--frss-scrollbar-track);
 		scrollbar-width: thin;
 	}
 
-	#sidebar:hover,
 	.scrollbar-thin:hover {
 		scrollbar-color: var(--frss-scrollbar-handle-hover) var(--frss-scrollbar-track-hover);
 	}
 }
 
 @supports not (scrollbar-width: thin) {
-	#sidebar::-webkit-scrollbar,
 	.scrollbar-thin::-webkit-scrollbar {
 		background-color: var(--frss-scrollbar-track);
 		width: 8px;
 	}
 
-	#sidebar:hover::-webkit-scrollbar,
 	.scrollbar-thin:hover::-webkit-scrollbar {
 		background-color: var(--frss-scrollbar-track-hover);
 	}
 
-	#sidebar::-webkit-scrollbar-thumb,
 	.scrollbar-thin::-webkit-scrollbar-thumb {
 		background-color: var(--frss-scrollbar-handle);
 		display: unset;
 		border-radius: 5px;
 	}
 
-	#sidebar:hover::-webkit-scrollbar-thumb,
 	.scrollbar-thin:hover::-webkit-scrollbar-thumb {
 		background-color: var(--frss-scrollbar-handle-hover);
 	}