<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>1-9 创建垂直表单</title>
<link rel="stylesheet" href="css/bootstrap.min.css">
<script src="js/jquery-3.5.1.min.js"></script>
<script src="js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<!-- <div class="row"> -->
<!-- <div class="col-md-12"> -->
<!-- role属性主要是为了方便残疾人使用web -->
<form action="" ro