spoiler tag

docs/.vitepress/theme/components/TTS.vue

@@ -1,10 +1,10 @@
 <template>
   <span>
-    <span ref="main">
+    <span ref="main" :class="class">
       <slot />
     </span>
     <span>
-      <button type="button" @click="playAudio()">▶️</button>
+      <button type="button" @click="playAudio()">🎤︎︎</button>
     </span>
   </span>
 </template>
@@ -13,6 +13,7 @@
 import { useTemplateRef } from "vue";
 
 const { lang = "ko" } = defineProps<{
+  class?: string;
   lang?: string;
 }>();