小动一下布局

src/App.tsx

@@ -261,14 +261,14 @@ function App() {
       </div>
       <h2>评论列表</h2>
       <div className="refresh-button">
-        <p>共{commentCount}条评论</p>
+        {comments.length !== 0 && <p>共{commentCount}条评论</p>}
+        {comments.length === 0 && <p>暂无评论</p>}
         <button type="button" onClick={fetchComments} disabled={loading}>
           {loading ? '↻...' : '↻'}
         </button>
       </div>
       <div className="comments-container">
         {!loading && error && <p className="error">{error}</p>}
-        {!loading && comments.length === 0 && <p>暂无评论</p>}
         <ul>
           {comments.map((comment) => (
               <li key={comment.id}>