i18n: translate Back button in STK menu

index.html

@@ -964,9 +964,9 @@
 	</div>
 
 	<div id="stk-menu-panel" class="fixed inset-0 bg-black/50 z-50 flex items-center justify-center hidden">
-		<div class="bg-white dark:bg-slate-800 rounded-lg p-4 max-w-md w-full max-h-[80vh] flex flex-col">
+		<div class="bg-white dark:bg-slate-800 rounded-lg p-4 max-w-xs w-full max-h-[80vh] flex flex-col">
 			<div class="flex justify-between items-center mb-3">
-				<button id="stk-back-btn" onclick="stkMenuRespond('back')" class="px-3 py-1 text-xs rounded-full bg-gray-200 dark:bg-slate-700 text-gray-700 dark:text-slate-300 hover:bg-gray-300 dark:hover:bg-slate-600" style="display:none">← Back</button>
+				<button id="stk-back-btn" onclick="stkMenuRespond('back')" class="px-3 py-1 text-xs rounded-full bg-gray-200 dark:bg-slate-700 text-gray-700 dark:text-slate-300 hover:bg-gray-300 dark:hover:bg-slate-600" style="display:none" data-l10n="← Back">← Back</button>
 				<span id="stk-menu-panel-title" class="font-bold text-sm flex-1 text-center"></span>
 				<button onclick="stkMenuExit()" class="px-3 py-1 text-xs rounded-full bg-red-100 dark:bg-red-900/30 text-red-700 dark:text-red-400 hover:bg-red-200 dark:hover:bg-red-900/50" data-l10n="Exit">Exit</button>
 			</div>
@@ -3755,6 +3755,7 @@ const LANG_RU = {
 	'Timeout': 'Таймаут',
 	'OK': 'OK',
 	'Exit': 'Выход',
+	'← Back': '← Назад',
 	'Connecting...': 'Подключение...',
 	'Checking card...': 'Проверка карты...',
 	'Connected': 'Подключено',

style.css

@@ -751,6 +751,10 @@ video {
   max-width: 28rem;
 }
 
+.max-w-xs {
+  max-width: 20rem;
+}
+
 .flex-1 {
   flex: 1 1 0%;
 }