refactor: update tailwind configure contant

app/src/components/CompleteModal.vue

@@ -17,7 +17,7 @@ setTimeout(() => {
 
 <template>
   <div v-if="showModal" class="modal">
-    <div class="modal-content bg-background-secondary rounded-lg">
+    <div class="modal-content bg-bg-secondary rounded-lg">
       <span class="close text-text" @click="closeModal">&times;</span>
       <h2 class="text-2xl text-text mb-5 w-full inline-flex justify-center">
         Quest Completed!