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layui/docs/class/index.md

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2 years ago
---
title: 公共类 class
toc: true
---
# 公共类
> 公共类是 `layui.css` 中并不以组件形式存在的公共 `class` 选择器,而又能用于任何地方。
<h2 id="base" lay-toc="{}" style="margin-bottom: 0;">普通类</h2>
| className | 描述 |
| --- | --- |
| layui-main | 设置一个固定宽度为 `1160px` 的水平居中块 |
| layui-border-box | 设置元素及其所有子元素均为 `box-sizing: content-box` 模型的容器 |
| layui-clear | 清除前面的同级元素产生的浮动 |
| layui-clear-space <sup>2.8+</sup> | 清除容器内的空白符 |
| layui-inline | 设置元素为内联块状结构 |
| layui-elip | 设置单行文本溢出并显示省略号 |
| layui-unselect | 屏蔽选中 |
| layui-disabled | 设置元素为不可点击状态 |
| layui-circle | 设置元素为圆形。需确保 `width``height` 相同 |
<h2 id="display" lay-toc="{hot: true}">显示隐藏</h2>
| className | 描述 |
| --- | --- |
| layui-show | 设置元素为 `display: block` 可见状态 |
| layui-hide | 设置元素为 `display: none` 隐藏状态,且不占用空间 |
| layui-show-v | 设置元素为 `visibility: visible` 可见状态 |
| layui-hide-v | 设置元素为 `visibility: hidden` 不可见状态,且依旧占用空间 |
<h2 id="triangle" lay-toc="{}">三角实体</h2>
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| className | 描述 |
| --- | --- |
| layui-edge | 定义一个三角形基础类 |
| layui-edge-top | 设置向上三角 |
| layui-edge-right | 设置向右三角 |
| layui-edge-bottom | 设置向下三角 |
| layui-edge-left | 设置向左三角 |
示例
<pre class="layui-code" lay-options="{preview: true, layout: ['preview', 'code'], tools: ['full']}">
<textarea>
向上三角:
<i class="layui-edge layui-edge-top"></i>
<i class="layui-edge layui-edge-top" style="border-bottom-color: black;"></i>
<hr>
向右三角:
<i class="layui-edge layui-edge-right"></i>
<i class="layui-edge layui-edge-right" style="border-left-color: black;"></i>
<hr>
向下三角:
<i class="layui-edge layui-edge-bottom"></i>
<i class="layui-edge layui-edge-bottom" style="border-top-color: black;"></i>
<hr>
向左三角:
<i class="layui-edge layui-edge-left"></i>
<i class="layui-edge layui-edge-left" style="border-right-color: black;"></i>
</textarea>
</pre>
<h2 id="edge-distance" lay-toc="{}">内外边距</h2>
| className | 描述 |
| --- | --- |
| layui-padding-1 | 4px 内边距 |
| layui-padding-2 | 8px 内边距 |
| layui-padding-3 | 16px 内边距 |
| layui-padding-4 | 32px 内边距 |
| layui-padding-5 | 48px 内边距 |
| layui-margin-1 | 4px 外边距 |
| layui-margin-2 | 8px 外边距 |
| layui-margin-3 | 16px 外边距 |
| layui-margin-4 | 32px 外边距 |
| layui-margin-5 | 48px 外边距 |
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<h2 id="bg" lay-toc="{hot: true}">背景颜色</h2>
| className | 背景色 | 预览 |
| --- | --- | --- |
| layui-bg-red | 红 | <div class="layui-bg-red">&nbsp;</div> |
| layui-bg-orange | 橙 | <div class="layui-bg-orange">&nbsp;</div> |
| layui-bg-green | 绿 | <div class="layui-bg-green">&nbsp;</div> |
| layui-bg-blue | 蓝 | <div class="layui-bg-blue">&nbsp;</div> |
| layui-bg-purple <sup>2.8+</sup> | 紫 | <div class="layui-bg-purple">&nbsp;</div> |
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| layui-bg-black | 深 | <div class="layui-bg-black">&nbsp;</div> |
| layui-bg-gray | 浅 | <div class="layui-bg-gray">&nbsp;</div> |
<h2 id="font-size" lay-toc="{}">文字大小</h2>
| className | 文字大小和预览 |
| --- | --- |
| layui-font-12 | <span class="layui-font-12">12px</span> |
| layui-font-13 <sup>2.8+</sup> | <span class="layui-font-13">13px</span> |
| layui-font-14 | <span class="layui-font-14">14px</span> |
| layui-font-16 | <span class="layui-font-16">16px</span> |
| layui-font-18 | <span class="layui-font-18">18px</span> |
| layui-font-20 | <span class="layui-font-20">20px</span> |
| layui-font-22 <sup>2.8+</sup> | <span class="layui-font-22">22px</span> |
| layui-font-24 <sup>2.8+</sup> | <span class="layui-font-24">24px</span> |
| layui-font-26 <sup>2.8+</sup> | <span class="layui-font-26">26px</span> |
| layui-font-28 <sup>2.8+</sup> | <span class="layui-font-28">28px</span> |
| layui-font-30 <sup>2.8+</sup> | <span class="layui-font-30">30px</span> |
| layui-font-32 <sup>2.8+</sup> | <span class="layui-font-32">32px</span> |
<h2 id="font-color" lay-toc="{}">文字颜色</h2>
| className | 文字颜色和预览 |
| --- | --- |
| layui-font-red | <span class="layui-font-red"></span> |
| layui-font-orange | <span class="layui-font-orange"></span> |
| layui-font-green | <span class="layui-font-green">绿</span> |
| layui-font-blue | <span class="layui-font-blue"></span> |
| layui-font-purple <sup>2.8+</sup> | <span class="layui-font-purple"></span> |
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| layui-font-black | <span class="layui-font-black"></span> |
| layui-font-gray | <span class="layui-font-gray"></span> |
<h2 id="text" lay-toc="{hot: true}">文档容器</h2>
通过设置 `class="layui-text"` 定义一段包含标题、段落、列表、链接等组合的文档区域。
<pre class="layui-code" lay-options="{preview: 'iframe', style: 'height: 535px;', layout: ['preview', 'code'], tools: ['full','window']}">
<textarea>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>文本区域演示 - Layui</title>
<meta name="renderer" content="webkit">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="{{= d.layui[2].cdn.css }}" rel="stylesheet">
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</head>
<body>
<div class="layui-text" style="padding: 16px;">
<h1>标题1</h1>
<h2>标题2</h2>
<h3>标题3</h3>
<h4>标题4</h4>
<h5>标题5</h5>
<h6>标题6</h6>
<hr>
<ul>
<li>列表1</li>
<li>
列表2
<ul>
<li>列表2-1</li>
<li>列表2-2</li>
<li>列表2-3</li>
</ul>
</li>
<li>列表3</li>
</ul>
<hr>
<ol>
<li>列表1</li>
<li>列表2</li>
<li>列表3</li>
</ol>
<hr>
<h2>标题2</h2>
<p>段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1</p>
<p>段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2</p>
<blockquote>引用</blockquote>
<p>这是一个包含<a href="javascript:;">超文本</a><strong>加粗文本</strong>的段落</p>
</div>
</body>
</html>
</textarea>
</pre>