diff --git a/src/install/install.html b/src/install/install.html
index 4d222809..c9cea244 100644
--- a/src/install/install.html
+++ b/src/install/install.html
@@ -15,88 +15,89 @@
 		<div class="install-head shadow-sm mb-3">
 			<div class="container">
 				<div class="row align-items-center">
-					<div class="col-6 col-md-4">
+					<div class="col-5">
 						<a href="/" target="_blank" class="logo"><img src="/static/web/img/logo.png" title="DedeBIZ"></a>
 					</div>
-					<div class="col-6 col-md-8">
-						<div class="d-flex justify-content-end text-right">
+					<div class="col-7">
+						<div class="text-right">
 							<a href="https://www.dedebiz.com/service" target="_blank"><i class="fa fa-handshake-o"></i> 技术服务</a>
-							<a href="https://www.dedebiz.com/help" target="_blank" class="ml-3 d-none d-lg-block"><i class="fa fa-question-circle"></i> 帮助中心</a>
+							<a href="https://www.dedebiz.com/help" target="_blank" class="ml-3"><i class="fa fa-question-circle"></i> 帮助中心</a>
 						</div>
 					</div>
 				</div>
 			</div>
 		</div>
-		<div class="container install-box">
-			<?php if (count($arrMsg) > 0) {foreach($arrMsg as $msg){?>
-			<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 shadow-sm mb-3">
-				<div class="card-header">
-					<h1 class="text-center">安装DedeV<?php echo $cfg_version_detail;?></h1>
-				</div>
-				<div class="card-body">
-					<form action="/install/index.php" method="post" name="form1">
-						<input type="hidden" name="step" value="2">
-						<input type="hidden" name="cookieencode" value="<?php echo $rnd_cookieEncode;?>">
-						<input type="hidden" name="adminmail" value="admin@dedebiz.com">
-						<div class="form-group">
-							<label for="dbtype" class="form-label">数据库类型</label>
-							<select id="dbtype" name="dbtype" class="form-control form-select">
-								<option value="mysql" selected>MySQL</option>
-								<?php if (extension_loaded("sqlite3")) {;?><option value="sqlite">SQLite</option><?php }?>
-							</select>
-							<div class="form-text">数据库类型一般为MySQL，则SQLite用于开发调试</div>
-						</div>
-						<div class="form-group server">
-							<label for="dbhost" class="form-label">数据库地址</label>
-							<input type="text" name="dbhost" id="dbhost" class="form-control" placeholder="localhost">
-						</div>
-						<div class="form-group server">
-							<label for="dbuser" class="form-label">数据库账号</label>
-							<input type="text" name="dbuser" id="dbuser" class="form-control" placeholder="root">
-						</div>
-						<div class="form-group server">
-							<label for="dbpwd" class="form-label">数据库密码</label>
-							<input type="text" name="dbpwd" id="dbpwd" class="form-control" placeholder="请输入数据库密码">
-						</div>
-						<div class="form-group">
-							<label for="dbprefix" class="form-label">数据表前缀</label>
-							<input type="text" name="dbprefix" id="dbprefix" class="form-control" placeholder="biz_">
-							<div class="form-text text-danger">注意DedeV<?php echo $cfg_version_detail;?>数据表前缀默认为biz_</div>
-						</div>
-						<div class="form-group">
-							<label for="dbname" class="form-label">数据库名称</label>
-							<div class="input-group">
-								<input id="dbname" name="dbname" type="text" class="form-control" placeholder="DedeBIZ">
-								<div class="input-group-append"><button type="button" id="btnCheckConnect" class="btn btn-success">检查</button></div>
+		<div class="container">
+			<div class="install-box">
+				<?php if (count($arrMsg) > 0) {foreach($arrMsg as $msg){?>
+				<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 shadow-sm mb-3">
+					<div class="card-header">
+						<h1 class="text-center">安装DedeV<?php echo $cfg_version_detail;?></h1>
+					</div>
+					<div class="card-body">
+						<form action="/install/index.php" method="post" name="form1">
+							<input type="hidden" name="step" value="2">
+							<input type="hidden" name="cookieencode" value="<?php echo $rnd_cookieEncode;?>">
+							<input type="hidden" name="adminmail" value="admin@dedebiz.com">
+							<div class="form-group">
+								<label for="dbtype" class="form-label">数据库类型</label>
+								<select id="dbtype" name="dbtype" class="form-control form-select">
+									<option value="mysql" selected>MySQL</option>
+									<?php if (extension_loaded("sqlite3")) {;?><option value="sqlite">SQLite</option><?php }?>
+								</select>
+								<div class="form-text">数据库类型一般为MySQL，则SQLite用于开发调试</div>
 							</div>
-						</div>
-						<div id="alertConnect"></div>
-						<div class="form-group">
-							<label for="baseurl" class="form-label">网站地址</label>
-							<input type="text" name="baseurl" id="baseurl" class="form-control" placeholder="<?php echo $baseurl;?>">
-						</div>
-						<div class="form-group">
-							<label for="webname" class="form-label">网站名称</label>
-							<input type="text" name="webname" id="webname" class="form-control" placeholder="我的网站">
-						</div>
-						<div class="form-group">
-							<label for="adminuser" class="form-label">管理员账号</label>
-							<input type="text" name="adminuser" id="adminuser" class="form-control" placeholder="admin" onkeyup="this.value=this.value.replace(/[^0-9a-zA-Z_@!\.-]/g,'');">
-							<div class="form-text">请使用数字0-9小写a-z大写A-Z符号_@!.-</div>
-						</div>
-						<div class="form-group">
-							<label for="adminpwd" class="form-label">管理员密码</label>
-							<input type="text" name="adminpwd" id="adminpwd" class="form-control" placeholder="admin" onkeyup="this.value=this.value.replace(/[^0-9a-zA-Z_@!\.-]/g,'');">
-							<div class="form-text">请使用数字0-9小写a-z大写A-Z符号_@!.-</div>
-						</div>
-						<div class="text-right"><button type="submit" class="btn btn-success">安装</button></div>
-					</form>
+							<div class="form-group server">
+								<label for="dbhost" class="form-label">数据库地址</label>
+								<input type="text" name="dbhost" id="dbhost" class="form-control" placeholder="localhost">
+							</div>
+							<div class="form-group server">
+								<label for="dbuser" class="form-label">数据库账号</label>
+								<input type="text" name="dbuser" id="dbuser" class="form-control" placeholder="root">
+							</div>
+							<div class="form-group server">
+								<label for="dbpwd" class="form-label">数据库密码</label>
+								<input type="text" name="dbpwd" id="dbpwd" class="form-control" placeholder="请输入数据库密码">
+							</div>
+							<div class="form-group">
+								<label for="dbprefix" class="form-label">数据表前缀</label>
+								<input type="text" name="dbprefix" id="dbprefix" class="form-control" placeholder="biz_">
+								<div class="form-text text-danger">注意DedeV<?php echo $cfg_version_detail;?>数据表前缀默认为biz_</div>
+							</div>
+							<div class="form-group">
+								<label for="dbname" class="form-label">数据库名称</label>
+								<div class="input-group">
+									<input id="dbname" name="dbname" type="text" class="form-control" placeholder="DedeBIZ">
+									<div class="input-group-append"><button type="button" id="btnCheckConnect" class="btn btn-success">检查</button></div>
+								</div>
+							</div>
+							<div id="alertConnect"></div>
+							<div class="form-group">
+								<label for="baseurl" class="form-label">网站地址</label>
+								<input type="text" name="baseurl" id="baseurl" class="form-control" placeholder="<?php echo $baseurl;?>">
+							</div>
+							<div class="form-group">
+								<label for="webname" class="form-label">网站名称</label>
+								<input type="text" name="webname" id="webname" class="form-control" placeholder="我的网站">
+							</div>
+							<div class="form-group">
+								<label for="adminuser" class="form-label">管理员账号</label>
+								<input type="text" name="adminuser" id="adminuser" class="form-control" placeholder="admin" onkeyup="this.value=this.value.replace(/[^0-9a-zA-Z_@!\.-]/g,'');">
+								<div class="form-text">请使用数字0-9小写a-z大写A-Z符号_@!.-</div>
+							</div>
+							<div class="form-group">
+								<label for="adminpwd" class="form-label">管理员密码</label>
+								<input type="text" name="adminpwd" id="adminpwd" class="form-control" placeholder="admin" onkeyup="this.value=this.value.replace(/[^0-9a-zA-Z_@!\.-]/g,'');">
+								<div class="form-text">请使用数字0-9小写a-z大写A-Z符号_@!.-</div>
+							</div>
+							<div class="text-right"><button type="submit" class="btn btn-success">安装</button></div>
+						</form>
+					</div>
 				</div>
 			</div>
-			<p><a href="https://www.dedebiz.com" target="_blank">Powered by DedeBIZ开发团队</a></p>
 		</div>
 		<script>
 			$("#btnCheckConnect").click(function() {