Bootstrap布局之栅格系统详解

2024-05-06 14:56:17

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前些天学习了bootstrap,把其中的栅格系统整理出来，如有错误，欢迎指正。
概要，栅格系统针对pc,pad,移动端开发出响应式web页面，根据不同屏幕分辨率有针对不同的解决方法。
(0.1, 屏幕设备尺寸大于1200px 选择col-lg
(0.2. 屏幕设备尺寸在970px到1200px 选择col-md
(0.3. 屏幕设备尺寸在768px到970px 选择col-sm
(0.4. 屏幕设备尺寸小于768px 选择col-xs

1.栅格系统把页面分为12栏（最多12栏），如下：

<!DOCTYPE html><html lang="zh-cn"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width,initial-scale=1,maxinum-scale,user-scalable=no"> <title>栅格系统</title> <link rel="stylesheet" href="library/bootstrap.min.css"> <style>       .a{        height: 50px;        border: 1px red solid;        background: pink;       }  </style></head><body> <div class="container a">  <div class="row">   <div class="col-md-1 a">1</div>   <div class="col-md-1 a">1</div>   <div class="col-md-1 a">1</div>   <div class="col-md-1 a">1</div>   <div class="col-md-1 a">1</div>   <div class="col-md-1 a">1</div>   <div class="col-md-1 a">1</div>   <div class="col-md-1 a">1</div>   <div class="col-md-1 a">1</div>   <div class="col-md-1 a">1</div>   <div class="col-md-1 a">1</div>   <div class="col-md-1 a">1</div>  </div>  <div class="row">   <div class="col-md-3 a">3</div>   <div class="col-md-9 a">9</div>  </div> </div><script src="library/jq.js"></script> <script src="library/bootstrap.min.js"></script></body></html>

(2.1, col-md-1为一栏，合计12栏布满一个"横排"，md后尾随的数字为分配的栏数，（col-lg,col-sm,col-xs同理）

3.在不同屏幕分辨率的设备下，所呈现的页面为对应的"栅格式栏数页面"，从而实现响应式布局,如下代码：

<!DOCTYPE html><html lang="zh-cn"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width,initial-scale=1,maxinum-scale,user-scalable=no"> <title>栅格系统</title> <link rel="stylesheet" href="library/bootstrap.min.css"> <style>       .a{        height: 50px;        border: 1px red solid;        background: pink;       }  </style></head><body> <div class="container">  <div class="row">   <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">1</div>   <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">1</div>   <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">1</div>   <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">1</div>   <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">1</div>   <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">1</div>   <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">1</div>   <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">1</div>   <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">1</div>   <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">1</div>   <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">1</div>   <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">1</div>     </div> </div><script src="library/jq.js"></script> <script src="library/bootstrap.min.js"></script></body></html>

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