今天学习了Bootstrap框架，对其进行引入与基本布局
引用：
<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <!--导入bootstrap样式文本css--> <link rel="stylesheet" href="css/bootstrap.css"> <title>Document</title> </head> <body> <img src="images/1.jpg" alt="" class="img-responsive img-circle"> <div class="alert alert-danger"> <a href="" class="close" data-dismiss="alert">X</a> <strong>警告：</strong>您已非法操作 </div> <!--导入支持文件:jquery--> <script src="js/jquery-3.3.1.min.js"></script> <!--导入bootstrap的js文件--> <script src="js/bootstrap.js"></script> </body> </html>
点击 "运行实例" 按钮查看在线实例
浏览图：
基本博客布局
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<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<link rel="stylesheet" href="css/bootstrap.css">
<title>博客布局</title>
<style>
.grid {
border: 1px solid #696969;
border-radius: 5px;
background-color: lightskyblue;
min-height: 50px;
text-align: center;
line-height: 50px;
}
</style>
</head>
<body>
<div class="container">
<div class="row">
<div class="col-md-12">
<nav class="navbar navbar-inverse">
<div class="container-fluid">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">博客</a>
</div>
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li class="active"><a href="#">首页 <span class="sr-only">(current)</span></a></li>
<li><a href="#">发布</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">应用 <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="#">直播</a></li>
<li><a href="#">新闻</a></li>
<li role="separator" class="divider"></li>
<li><a href="#"></a>其他应用</li>
</ul>
</li>
</ul>
<form class="navbar-form navbar-left">
<div class="form-group">
<input type="text" class="form-control" placeholder="搜索内容">
</div>
<button type="submit" class="btn btn-default">搜索</button>
</form>
<ul class="nav navbar-nav navbar-right">
<li><a href="#">登陆</a></li>
<li><a href="#">注册</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">邮箱 <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="#">免费注册</a></li>
<li><a href="#">VIP邮箱</a></li>
<li><a href="#">企业邮箱</a></li>
<li role="separator" class="divider"></li>
<li><a href="#">***端下载</a></li>
</ul>
</li>
</ul>
</div>
</div>
</nav>
</div>
</div>
<div class="row">
<div class="col-md-6">
<div class="page-header">
<h1>最新新闻
<small>关注生活每一天</small>
</h1>
</div>
<div class="list-group">
<a href="#" class="list-group-item active">
PHP中文网是中国最大的PHP网站
</a>
<a href="#" class="list-group-item">PHP语言是最好的语言</a>
<a href="#" class="list-group-item">我爱PHP</a>
</div>
</div>
<div class="col-md-6">
<img src="images/1.jpg" alt="" class="img-responsive img-circle">
</div>
</div>
</div>
<script src="js/jquery-3.3.1.min.js"></script>
<script src="js/bootstrap.js"></script>
</body>
</html>点击 "运行实例" 按钮查看在线实例
浏览图
![~Z{6Y4WAH4X(RH5]_J(LGSN.png](https://img.php.cn//upload/image/881/130/384/1537856465731503.png "1537856465731503.png")
![)VGIW9)U26@]0}7YBW0}SXO.png](https://img.php.cn//upload/image/809/392/518/1537856497416221.png "1537856497416221.png")
总结：
使用Bootstrap框架,能够更加效率的实现响应式布局，它拥有完备的框架结构，整体效果和谐，对谷歌，火狐，IE等浏览器均可支持，项目开发方便快捷，扩展性强，能够更好的与现实的web开发项目结合，拥有完善的文档，使用起来更方便。
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