diff --git a/index.html b/index.html
index b7c6f6c..7ad167b 100644
--- a/index.html
+++ b/index.html
@@ -26,11 +26,11 @@
 	</div>
 
 	<div class="flex gap-1 mb-4 border-b border-gray-300 dark:border-slate-600">
-		<button class="tab-btn active px-4 py-2 text-sm rounded-t bg-blue-600 dark:bg-blue-500 text-white dark:text-white" data-tab="c-apdu">C-APDU</button>
-		<button class="tab-btn px-4 py-2 text-sm rounded-t bg-gray-200 dark:bg-slate-700 hover:bg-gray-300 dark:hover:bg-slate-600 text-gray-700 dark:text-slate-300" data-tab="sp">Secured Packet</button>
-		<button class="tab-btn px-4 py-2 text-sm rounded-t bg-gray-200 dark:bg-slate-700 hover:bg-gray-300 dark:hover:bg-slate-600 text-gray-700 dark:text-slate-300" data-tab="response" data-l10n="Response parser">Response parser</button>
-		<button class="tab-btn px-4 py-2 text-sm rounded-t bg-gray-200 dark:bg-slate-700 hover:bg-gray-300 dark:hover:bg-slate-600 text-gray-700 dark:text-slate-300" data-tab="cards" data-l10n="Cards">Cards</button>
-		<button class="tab-btn px-4 py-2 text-sm rounded-t bg-gray-200 dark:bg-slate-700 hover:bg-gray-300 dark:hover:bg-slate-600 text-gray-700 dark:text-slate-300" data-tab="pysim" data-l10n="Card reader">Card reader</button>
+		<button class="tab-btn active px-4 py-1.5 text-sm rounded-t bg-blue-600 dark:bg-blue-500 text-white dark:text-white" data-tab="c-apdu">C-APDU</button>
+		<button class="tab-btn px-4 py-1.5 text-sm rounded-t bg-gray-200 dark:bg-slate-700 hover:bg-gray-300 dark:hover:bg-slate-600 text-gray-700 dark:text-slate-300" data-tab="sp">Secured Packet</button>
+		<button class="tab-btn px-4 py-1.5 text-sm rounded-t bg-gray-200 dark:bg-slate-700 hover:bg-gray-300 dark:hover:bg-slate-600 text-gray-700 dark:text-slate-300" data-tab="response" data-l10n="Response parser">Response parser</button>
+		<button class="tab-btn px-4 py-1.5 text-sm rounded-t bg-gray-200 dark:bg-slate-700 hover:bg-gray-300 dark:hover:bg-slate-600 text-gray-700 dark:text-slate-300" data-tab="cards" data-l10n="Cards">Cards</button>
+		<button class="tab-btn px-4 py-1.5 text-sm rounded-t bg-gray-200 dark:bg-slate-700 hover:bg-gray-300 dark:hover:bg-slate-600 text-gray-700 dark:text-slate-300" data-tab="pysim" data-l10n="Card reader">Card reader</button>
 	</div>
 
 	<div id="tab-c-apdu" class="tab-content">