用户管理的添加、修改页面的居中问题

guns-sys/src/main/webapp/pages/modular/system/user/user_add.html

@@ -6,7 +6,7 @@
 <div class="layui-fluid " style="">
 <div class="layui-fluid " style="">
     <div class="layui-card">
     <div class="layui-card">
         <div class="layui-card-body">
         <div class="layui-card-body">
-            <form id="userForm" lay-filter="userForm" class="layui-form model-form">
+            <form id="userForm" lay-filter="userForm" class="layui-form model-form" style="max-width: 700px;margin: 40px auto;">
             <input name="userId" type="hidden"/>
             <input name="userId" type="hidden"/>
             <div class="layui-form-item">
             <div class="layui-form-item">
                 <label class="layui-form-label">账号<span style="color: red;">*</span></label>
                 <label class="layui-form-label">账号<span style="color: red;">*</span></label>

guns-sys/src/main/webapp/pages/modular/system/user/user_edit.html

@@ -6,7 +6,7 @@
 <div class="layui-fluid " style="">
 <div class="layui-fluid " style="">
     <div class="layui-card">
     <div class="layui-card">
         <div class="layui-card-body">
         <div class="layui-card-body">
-            <form id="userForm" lay-filter="userForm" class="layui-form model-form">
+            <form id="userForm" lay-filter="userForm" class="layui-form model-form" style="max-width: 700px;margin: 40px auto;">
                 <input name="userId" type="hidden"/>
                 <input name="userId" type="hidden"/>
                 <input name="account" type="hidden"/>
                 <input name="account" type="hidden"/>
                 <div class="layui-form-item">
                 <div class="layui-form-item">