diff --git a/examples/chapter03/tasks/index.html b/examples/chapter03/tasks/index.html
index 278c40a..5b9f278 100644
--- a/examples/chapter03/tasks/index.html
+++ b/examples/chapter03/tasks/index.html
@@ -91,16 +91,19 @@
             <textarea class="form-control" id="body" rows="3" placeholder="输入帖子内容"></textarea>
         </div>
         <div class="mb-3">
-            <label for="cover" class="form-label">内容</label>
+            <label for="cover" class="form-label">封面图片</label>
             <input type="text" class="form-control" id="cover" placeholder="image"/>
         </div>
+        <div class="mb-3">
+            <label for="cover" class="form-label">图片</label>
+            <input type="text" class="form-control" id="thumbnail" placeholder="image"/>
+        </div>
         <div class="mb-3">
             <label for="userId" class="form-label">用户ID</label>
             <input type="text" class="form-control" id="userId" placeholder="输入用户id">
         </div>
         <button  class="btn btn-primary" id="submit">发布</button>
     </form>
-
 </div>