1. Basic principles:
1. Think of the screen as a grid/grid/cell/composition arranged in an orderly manner along the horizontal and vertical directions;
2. All data must be placed in the grid;
3. Use responsive layout, mobile settings take priority
2. Screen resolution division basis
1. ( screen
2. (768px
3. (992px
4. (1200
2. Implementation principle
1. The first step: a container must be created, class="container"
2. The second step: a row must be created, class="row"
3. The third step : A grid must be created, class="col-md-x", taking a medium screen as an example, the critical point is 992px
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<link rel="stylesheet" href="dist/css/bootstrap.css">
<script src="jquery-3.2.1.js"></script>
<script src="dist/js/bootstrap.js"></script>
<title>栅格布局系统</title>
<style>
.grid {
border: 1px solid #696969;
border-radius: 5px;
background-color: lightskyblue;
min-height: 30px;
text-align: center;
line-height: 30px;
}
.green {
background-color: lightgreen;
}
.pink {
background-color: lightpink;
}
</style>
</head>
<body>
<div class="container">
<h4 id="整行">整行:</h4>
<div class="row">
<div class="col-md-12 grid">内容</div>
</div>
<h4 id="二等分">二等分:</h4>
<div class="row">
<!--<div class="col-md-6 grid">内容</div>-->
<!--大屏39分-->
<!--<div class="col-md-6 col-lg-3 grid green">内容</div>-->
<!--小屏48分-->
<div class="col-md-6 col-lg-3 col-sm-4 grid green">内容</div>
<!--<div class="col-md-6 col-sm-8 grid">内容</div>-->
<!--<div class=" col-md-6 grid">内容</div>-->
<!--<div class=" col-md-6 col-lg-9 grid pink">内容</div>-->
<div class=" col-md-6 col-lg-9 grid col-sm-8 pink">内容</div>
<!--<div class=" col-md-6 col-sm-4 grid">内容</div>-->
</div>
<h4 id="三等分">三等分:</h4>
<div class="row">
<div class="col-md-4 grid">内容</div>
<div class="col-md-4 grid">内容</div>
<div class="col-md-4 grid">内容</div>
</div>
<h4 id="四等分">四等分:</h4>
<div class="row">
<div class="col-md-3 grid">内容</div>
<div class="col-md-3 grid">内容</div>
<div class="col-md-3 grid">内容</div>
<div class="col-md-3 grid">内容</div>
</div>
<!--<h4 id="五等分-除-除不尽-不用五等分">五等分:12除5除不尽,不用五等分</h4>-->
<h4 id="六等分">六等分:</h4>
<div class="row">
<div class="col-md-2 grid">内容</div>
<div class="col-md-2 grid">内容</div>
<div class="col-md-2 grid">内容</div>
<div class="col-md-2 grid">内容</div>
<div class="col-md-2 grid">内容</div>
<div class="col-md-2 grid">内容</div>
</div>
<h4 id="四八开">四八开:</h4>
<div class="row">
<div class="col-md-4 grid">内容</div>
<div class="col-md-8 grid">内容</div>
</div>
<h4 id="三九开">三九开:</h4>
<div class="row">
<div class="col-md-3 grid">内容</div>
<div class="col-md-9 grid">内容</div>
</div>
</div>
</body>
</html>[Related video recommendations: Bootstrap tutorial】
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