diff --git a/index.html b/index.html
index aae31bf..9d1a7b8 100644
--- a/index.html
+++ b/index.html
@@ -27,14 +27,10 @@
 		<button type="submit">跳转</button>
 	</form>
 
-	<div style="margin-top:20px" class="nav">
-		<include src="./lib/main.html"></include>
-	</div>
+	<include class="nav" src="./lib/main.html"></include>
 
 	<h2>地址导航</h2>
-	<div class="nav">
-		<include src="./lib/nav.html"></include>
-	</div>
+	<include class="nav" src="./lib/nav.html"></include>
 
 	<div id="page" class="nested">
 		<iframe src="./default.html" class="page"></iframe>