diff --git a/docs/dedebiz.png b/docs/dedebiz.png
index 18863eb2..417c0ea6 100644
Binary files a/docs/dedebiz.png and b/docs/dedebiz.png differ
diff --git a/src/install/install.html b/src/install/install.html
index a1187390..ab7f51ab 100644
--- a/src/install/install.html
+++ b/src/install/install.html
@@ -32,7 +32,7 @@
 			<div class="alert alert-warning"><?php echo $msg ?></div>
 			<?php }}?>
 			<div class="alert alert-warning">请先阅读<a href="https://www.dedebiz.com/license?from=install" target="_blank">《站点授权协议》</a></div>
-			<div class="card mb-3">
+			<div class="card shadow-sm mb-3">
 				<div class="card-header">
 					<h1 class="text-center">安装DedeV<?php echo $cfg_version_detail;?></h1>
 				</div>