feat: example04 작성 완료

example03/src/components/Items.js

@@ -7,10 +7,10 @@ export default class Items extends Component {
   template () {
     const { items } = this.$state;
     return `
-        <ul>
-          ${items.map(item => `<li>${item}</li>`).join('')}
-        </ul>
-        <button>추가</button>
+      <ul>
+        ${items.map(item => `<li>${item}</li>`).join('')}
+      </ul>
+      <button>추가</button>
     `
   }
 
@@ -20,4 +20,5 @@ export default class Items extends Component {
       this.setState({ items: [ ...items, `item${items.length + 1}` ] });
     });
   }
-}
+}
+