diff --git a/frontend/index.html b/frontend/index.html
index b7a4bec..b8b5b0c 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -1118,8 +1118,8 @@
 							<span class="pysim-fs-sort-pill px-2 py-0.5 rounded cursor-pointer bg-blue-600 text-white" data-fs-sort="fid" onclick="pysimFsSetSort('fid')">FID</span>
 							<span class="pysim-fs-sort-pill px-2 py-0.5 rounded cursor-pointer bg-gray-200 dark:bg-slate-700 text-gray-700 dark:text-slate-300" data-fs-sort="name" onclick="pysimFsSetSort('name')" data-l10n="Name">Name</span>
 							<span class="mx-1 text-gray-400 dark:text-slate-600">·</span>
-							<button type="button" onclick="pysimFsExpandAll()" class="text-xs text-blue-600 dark:text-blue-400 hover:underline" data-l10n="Expand all">Expand all</button>
-							<button type="button" onclick="pysimFsCollapseAll()" class="text-xs text-blue-600 dark:text-blue-400 hover:underline" data-l10n="Collapse all">Collapse all</button>
+							<button type="button" onclick="pysimFsExpandAll()" class="px-2 py-0.5 text-xs rounded border border-gray-300 dark:border-slate-600 hover:bg-gray-200 dark:hover:bg-slate-700 text-gray-700 dark:text-slate-300" data-l10n="Expand all">Expand all</button>
+							<button type="button" onclick="pysimFsCollapseAll()" class="px-2 py-0.5 text-xs rounded border border-gray-300 dark:border-slate-600 hover:bg-gray-200 dark:hover:bg-slate-700 text-gray-700 dark:text-slate-300" data-l10n="Collapse all">Collapse all</button>
 						</div>
 						<div class="flex items-center gap-1 mb-1 text-gray-500 dark:text-slate-400">
 							<span data-l10n="Filter:">Filter:</span>