在 Bootstrap
中解释基本的网格结构
原文:https://www . geesforgeks . org/explain-the-basic-grid-structure-in-bootstrap/
Bootstrap grid 是由 Flexbox 组成的非常强大的工具，创建网站开发更容易。它完全响应，还可以根据设备宽度调整容器中的物品。班级。需要容器通过包装网格的所有元素来使网格正常工作。引导网格中有 12 列，虽然没有必要使用所有的列，但是总和不能超过 12。它们也可以根据喜好合并成更宽的列。
根据设备或浏览器的宽度，引导网格系统具有以下类别。
浏览器宽度等于或大于 576px 的设备 | kind | Equipment size | | | --- | --- | --- | | **栏** | Device with browser width less than 576px | For small devices | | T25【col-sm】 | For small devices | | **col-MD** | A device with a browser width equal to or greater than 768px. | For medium-sized equipment | | **col-LG** | A device with a screen width equal to or greater than 992px. | For large equipment | | **col-XL** | Equipment with screen width equal to or greater than 1200px | For very large equipment |sm、md、lg 和 xl 分别表示器件尺寸，即小型、中型、大型和超大型。
对于 3 个等宽的等列，即 4 个横跨网页–
<div class="container">
<div class="row">
<div class="col-sm-4">Col-1 width-4</div>
<div class="col-sm-4">Col-2 width-4</div>
<div class="col-sm-4">Col-3 width-4</div>
</div>
</div>
输出:
对于网页上宽度不等的 3 列–
<div class="container">
<div class="row">
<div class="col-sm-4">Col-1 width-4</div>
<div class="col-sm-6">Col-2 width-6</div>
<div class="col-sm-2">Col-3 width-2</div>
</div>
</div>
输出:
示例:以下示例描述了各种列大小的 Bootstrap 的网格结构。
超文本标记语言
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href=
"https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
</head>
<body>
<h1 style="color:green;">
GeeksforGeeks
</h1>
<h5>Two equal columns</h5>
<div class="row">
<div class="col-sm-6" style=
"background-color:rgb(173, 248, 164);">
column-1 width-6
</div>
<div class="col-sm-6" style=
"background-color:rgb(71, 240, 121);">
column-2 width-6
</div>
</div>
<h5>Two unequal columns</h5>
<div class="row">
<div class="col-sm-8" style=
"background-color:rgb(173, 248, 164);">
column-1 width-8
</div>
<div class="col-sm-4" style=
"background-color:rgb(71, 240, 121);">
column-2 width-4
</div>
</div>
<h5>Three equal columns</h5>
<div class="row">
<div class="col-sm-4" style=
"background-color:rgb(173, 248, 164);">
column-1 width-4
</div>
<div class="col-sm-4" style=
"background-color:rgb(71, 240, 121);">
column-2 width-4
</div>
<div class="col-sm-4" style=
"background-color:rgb(55, 165, 70);">
column-3 width-4
</div>
</div>
<h5>Three unequal columns</h5>
<div class="row">
<div class="col-sm-2" style=
"background-color:rgb(173, 248, 164);">
column-1 width-2
</div>
<div class="col-sm-7" style=
"background-color:rgb(71, 240, 121);">
column-2 width-7
</div>
<div class="col-sm-3" style=
"background-color:rgb(55, 165, 70);">
column-3 width-3
</div>
</div>
<h5>six equal columns</h5>
<div class="row">
<div class="col-sm-2" style=
"background-color:rgb(173, 248, 164);">
column-1 width-2
</div>
<div class="col-sm-2" style=
"background-color:rgb(71, 240, 121);">
column-2 width-2
</div>
<div class="col-sm-2" style=
"background-color:rgb(55, 165, 70);">
column-3 width-2
</div>
<div class="col-sm-2" style=
"background-color:rgb(173, 248, 164);">
column-4 width-2
</div>
<div class="col-sm-2" style=
"background-color:rgb(71, 240, 121);">
column-5 width-2
</div>
<div class="col-sm-2" style=
"background-color:rgb(55, 165, 70);">
column-6 width-2
</div>
</div>
<h5>single column</h5>
<div class="row">
<div class="col-sm-12" style=
"background-color:rgb(173, 248, 164);">
column-1 width-12
</div>
</div>
</body>
</html>
输出:
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