Update index.htm

src/admin/templets/index.htm

@@ -18,7 +18,7 @@
 			<span>您使用的浏览器已过时，请<a href="https://www.dedebiz.com/browsehappy" target="_blank">更换浏览器</a>，提高后台操作体验</span>
 		</div>
 		<?php }?>
-		<div class="admin-head shadow-sm">
+		<div class="admin-head">
 			<div class="logo">
 				<a href="index_body.php" target="main" class="name"><?php echo cn_substr($cfg_webname, 12);?></a>
 				<span class="version"><?php echo $cfg_version_detail;?></span>