<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>3.2 实现栅格系统--扩展部分</title>
<style>
* {
box-sizing: border-box;
padding: 0;
margin: 0;
}
img {
width: 100%;
}
body {
padding-top: 100px;
}
.container {
background-color: #eee;
}
</style>
<link rel="stylesheet" href="css/grid.css">
</head>
<body>
<div class="container">
<!-- <div class="row">
<div class="col-md-4">
<img src="img/2-1.jpg" alt="cellphone">
</div>
<div class="col-md-4">
<img src="img/2-2.jpg" alt="cellphone">
</div>
<div class="col-md-4">
<img src="img/2-3.jpg" alt="cellphone">
</div>
</div> -->
<!-- <div class="row">
<div class="col-md-5">
<img src="img/2-1.jpg" alt="cellphone">
</div>
<div class="col-md-5">
<img src="img/2-2.jpg" alt="cellphone">
</div>
<div class="col-md-5">
<img src="img/2-3.jpg" alt="cellphone">
</div>
</div> -->
<!-- <div class="row">
<div class="col-md-4">
<img src="img/2-1.jpg" alt="cellphone">
</div>
<div class="col-md-4">
<img src="img/2-2.jpg" alt="cellphone">
</div>
</div> -->
<!-- <div class="row">
<div class="col-md-4">
<img src="img/2-1.jpg" alt="cellphone">
</div>
<div class="col-md-4 col-md-offset-4 col-lg-offset-0">
<img src="img/2-2.jpg" alt="cellphone">
</div>
</div> -->
<!-- <div class="row">
<div class="col-md-4 col-md-push-4 col-lg-push-0">
<img src="img/2-1.jpg" alt="cellphone">
</div>
<div class="col-md-4 col-md-pull-4 col-lg-pull-0">
<img src="img/2-2.jpg" alt="cellphone">
</div>
</div> -->
<!-- <div class="row">
<div class="col-md-4">
<img src="img/2-1.jpg" alt="cellphone">
</div>
<div class="col-md-4">
<img src="img/2-2.jpg" alt="cellphone">
</div>
<div class="col-md-4 d-none d-md-block">
<img src="img/2-3.jpg" alt="cellphone">
</div>
</div> -->
<div class="row">
<div class="col-md-4">
<img src="img/2-1.jpg" alt="cellphone">
</div>
<div class="col-md-4">
<img src="img/2-2.jpg" alt="cellphone">
</div>
<div class="col-md-4 d-md-none">
<img src="img/2-3.jpg" alt="cellphone">
</div>
</div>
</div>
</body>
</html>
========================================
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>5.2 实现栅格系统--扩展部分</title>
<style>
* {
box-sizing: border-box;
padding: 0;
margin: 0;
}
img {
width: 100%;
}
body {
padding-top: 100px;
}
.container {
background-color: #eee;
}
</style>
<link rel="stylesheet" href="css/grid-flex.css">
</head>
<body>
<div class="container">
<!-- <div class="row">
<div class="col-md-4">
<img src="img/2-1.jpg" alt="cellphone">
</div>
<div class="col-md-4 col-md-offset-4">
<img src="img/2-2.jpg" alt="cellphone">
</div>
</div> -->
<!-- <div class="row">
<div class="col-md-4 col-md-order-last">
<img src="img/2-1.jpg" alt="cellphone">
</div>
<div class="col-md-4 col-md-order-first">
<img src="img/2-2.jpg" alt="cellphone">
</div>
</div> -->
<div class="row">
<div class="col-md-4">
<img src="img/2-1.jpg" alt="cellphone">
</div>
<div class="col-md-4">
<img src="img/2-2.jpg" alt="cellphone">
</div>
<div class="col-md-4 d-none d-md-block">
<img src="img/2-3.jpg" alt="cellphone">
</div>
</div>
<!-- <div class="row">
<div class="col-md-4">
<img src="img/2-1.jpg" alt="cellphone">
</div>
<div class="col-md-4">
<img src="img/2-2.jpg" alt="cellphone">
</div>
<div class="col-md-4 d-md-none">
<img src="img/2-3.jpg" alt="cellphone">
</div>
</div> -->
</div>
</body>
</html>