<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- 上述3个meta标签*必须*放在最前面，任何其他内容都*必须*跟随其后！ -->
<title>Bootstrap 101 Template</title>
<!-- 1.加载Bootstrap层叠样式表 -->
<link href="css/bootstrap.min.css" rel="stylesheet">
<!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="//cdn.bootcss.com/html5shiv/3.7.2/html5shiv.min.js"></script>
<script src="//cdn.bootcss.com/respond.js/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body>
<!-- 输入框组 .input-group-addon添加额外属性 placeholder是默认值属性 -->
<div class="input-group input-group-lg">
<!-- 额外元素显示在左侧 -->
<span class="input-group-addon" id="basic-addon1">@</span>
<input type="text" class="form-control" placeholder="Username" aria-describedby="basic-addon1">
</div>
<br>
<!-- .input-group-*调节输入框大小-->
<div class="input-group input-group-lg">
<input type="text" class="form-control" placeholder="Recipient's username" aria-describedby="basic-addon2">
<!-- 额外元素显示在左侧 -->
<span class="input-group-addon" id="basic-addon2">@example.com</span>
</div>
<br>
<div class="input-group input-group-lg">
<!-- 额外元素显示在两侧 -->
<span class="input-group-addon">$</span>
<input type="text" class="form-control" aria-label="Amount (to the nearest dollar)">
<span class="input-group-addon">.00</span>
</div>
</body>
</html>
<!-- 2.加载JQuery库 -->
<script src="../plugins/jquery-1.12.4.min.js"></script>
<!-- 3.加载Bootstrap核心js -->
<script src="js/bootstrap.min.js"></script>
