【BootStrap__容器】

1、流体容器

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="bootstrap-3.3.7-dist/css/bootstrap.min.css">
    <style>
        .container-fluid {
            background-color: pink;
        }
    </style>
</head>
<body>
<div class="container-fluid">
    哈哈哈
</div>
</body>
<script src="http://code.jquery.com/jquery-2.1.4.min.js"></script>
<script src="bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>
</html>

2、固定容器

<div class="container">
    哈哈哈
</div>
阈值 width
1200<=w (lg 大屏pc) 1170
992<=w<1200 (md 中屏pc) 970
768<=w<992 (sm 平板) 750
w<768 (xs 移动手机) auto

3、栅格系统

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="bootstrap-3.3.7-dist/css/bootstrap.min.css">
    <style>
        .container {
            background-color: pink;
        }

        div[class|=col] {
            border: 1px solid;
        }
    </style>
</head>
<body>
<div class="container">
    <div class="row">
        <div class="col-lg-10">col-lg-10</div>
        <div class="col-lg-2">col-lg-2</div>
    </div>
    <div class="row">
        <div class="col-lg-6">col-lg-6</div>
        <div class="col-lg-6">col-lg-6</div>
    </div>
    <div class="row">
        <div class="col-lg-3">col-lg-3</div>
        <div class="col-lg-7">col-lg-7</div>
    </div>
</div>
</body>
<script src="http://code.jquery.com/jquery-2.1.4.min.js"></script>
<script src="bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>
</html>

4、栅格源码分析

1.流体容器&固定容器 公共样式
margin-right: auto;
margin-left: auto;
padding-left: 15px;
padding-right: 15px;

2.固定容器 特定样式
顺序不可变
@media (min-width: @screen-sm-min) {
width: @container-sm;
}
@media (min-width: @screen-md-min) {
width: @container-md;
}
@media (min-width: @screen-lg-min) {
width: @container-lg;
}

3.行
margin-left: -15px;
margin-right: -15px;

4.列
.make-grid-columns()--->
.col-xs-1, .col-sm-1, .col-md-1, .col-lg-1,
.col-xs-2, .col-sm-2, .col-md-2, .col-lg-2,
...
.col-xs-12, .col-sm-12, .col-md-12, .col-lg-12{
position: relative;
min-height: 1px;
padding-left: 15px;
padding-right: 15px;
}

.make-grid(xs)--->
float-grid-columns(@class);
* .col-xs-1,.col-xs-2,.col-xs-3,.col-xs-4,...col-xs-12{
* float: left;
* }
.loop-grid-columns(@grid-columns, @class, width);
* .col-xs-12{
* width:12/12;
* }
* .col-xs-11{
* width:11/12;
* }
* ...
* .col-xs-1{
* width:1/12;
* }
.loop-grid-columns(@grid-columns, @class, pull);
.loop-grid-columns(@grid-columns, @class, push);
*push pull:
* .col-xs-push-12{ .col-xs-pull-12{
* left:12/12; right:12/12;
* } }
* .col-xs-push-11{
* left:11/12;
* }
* ... ...
* .col-xs-push-1{
* left:1/12;
* }
* .col-xs-push-0{ .col-xs-pull-0{
* left:auto; right:auto;
* } }

.loop-grid-columns(@grid-columns, @class, offset);

响应式工具

栅格盒模型设计的精妙之处

容器两边具有15px的padding 、
行 两边具有-15px的margin
列 两边具有15px的padding

为了维护槽宽的规则，
列两边必须得要15px的padding
为了能使列嵌套行
行两边必须要有-15px的margin
为了让容器可以包裹住行
容器两边必须要有15px的padding

posted @ 2020-06-25 22:50  一只桔子2233  阅读(173)  评论(0)    收藏  举报