搜索引擎优化(seo)有很多工作要做，其中对代码的优化是一个很关键的步骤。为了更加符合SEO的规范，下面是目前流行的CSS+DIV的命名规则：
页头:header
登录条:loginBar
标志:logo
侧栏:sideBar
广告:banner
导航:nav
子导航:subNav
菜单:menu
子菜单:subMenu
搜索:search
滚动:scroll
页面主体:main
内容:content
标签页:tab
文章列表:list
提示信息:msg
小技巧:tips
栏目标题:title
友情链接:friendLink
页脚:footer
加入:joinus
指南:guild
服务:service
热点:hot
新闻:news
下载:download
注册:regsiter
状态:status
按钮:btn
投票:vote
合作伙伴:partner
版权:copyRight
CSSID的命名外套:wrap
主导航:mainNav
子导航:subnav
页脚:footer
整个页面:content
页眉:header
页脚:footer
商标:label
标题:title
主导航:mainNav(globalNav)
顶导航:topnav
边导航:sidebar
左导航:leftsideBar
右导航:rightsideBar
旗志:logo
标语:banner
菜单内容1:menu1Content
菜单容量:menuContainer
子菜单:submenu
边导航图标:sidebarIcon
注释:note
面包屑:breadCrumb(即页面所处位置导航提示)
容器:container
内容:content
搜索:search
登陆:login
功能区:shop(如购物车，收银台)
当前的current 样式文件命名主要的:master.css
布局版面:layout.css
:columns.css
文字:font.css
打印样式:print.css
主题:themes.css .
举例：
<!doctype html>
<html lang="en" class="no-js">
<head>
<meta charset="utf-8">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="canonical" href="https://html5-templates.com/" />
<title>Responsive HTML5 Page Layout Template</title>
<meta name="description" content="Simple HTML5 Page layout template with header, footer, sidebar etc.">
<link rel="stylesheet" href="style.css">
<script src="script.js"></script>
</head>
<body>
<header>
<div id="logo"><img src="/logo.png">HTML5 Layout</div>
<nav>
<ul>
<li><a href="/">Home</a>
<li><a href="https://html-css-js.com/">HTML</a>
<li><a href="https://html-css-js.com/css/">CSS</a>
<li><a href="https://htmlcheatsheet.com/js/">JS</a>
</ul>
</nav>
</header>
<section>
<strong>Demonstration of a simple page layout using HTML5 tags: header, nav, section, main, article, aside, footer, address.</strong>
</section>
<section id="pageContent">
<main role="main">
<article>
<h2>Stet facilis ius te</h2>
<p>Lorem ipsum dolor sit amet, nonumes voluptatum mel ea, cu case ceteros cum. Novum commodo malorum vix ut. Dolores consequuntur in ius, sale electram dissentiunt quo te. Cu duo omnes invidunt, eos eu mucius fabellas. Stet facilis ius te, quando voluptatibus eos in. Ad vix mundi alterum, integre urbanitas intellegam vix in.</p>
</article>
<article>
<h2>Illud mollis moderatius</h2>
<p>Eum facete intellegat ei, ut mazim melius usu. Has elit simul primis ne, regione minimum id cum. Sea deleniti dissentiet ea. Illud mollis moderatius ut per, at qui ubique populo. Eum ad cibo legimus, vim ei quidam fastidii.</p>
</article>
<article>
<h2>Ex ignota epicurei quo</h2>
<p>Quo debet vivendo ex. Qui ut admodum senserit partiendo. Id adipiscing disputando eam, sea id magna pertinax concludaturque. Ex ignota epicurei quo, his ex doctus delenit fabellas, erat timeam cotidieque sit in. Vel eu soleat voluptatibus, cum cu exerci mediocritatem. Malis legere at per, has brute putant animal et, in consul utamur usu.</p>
</article>
<article>
<h2>His at autem inani volutpat</h2>
<p>Te has amet modo perfecto, te eum mucius conclusionemque, mel te erat deterruisset. Duo ceteros phaedrum id, ornatus postulant in sea. His at autem inani volutpat. Tollit possit in pri, platonem persecuti ad vix, vel nisl albucius gloriatur no.</p>
</article>
</main>
<aside>
<div>Sidebar 1</div>
<div>Sidebar 2</div>
<div>Sidebar 3</div>
</aside>
</section>
<footer>
<p>© You can copy, edit and publish this template but please leave a link to our website | <a href="https://html5-templates.com/" target="_blank" rel="nofollow">HTML5 Templates</a></p>
<address>
Contact: <a href="mailto:[email protected]">Mail me</a>
</address>
</footer>
</body>
</html>
文章页模板例子，来自：wp
<?php get_header(); ?>
<body class="post-template-default single single-post postid-1 single-format-standard">
<div id="page" class="hfeed site">
<?php get_sidebar(); ?>
<!-- .sidebar -->
<div id="content" class="site-content">
<div id="primary" class="content-area">
<main id="main" class="site-main" role="main">
<article id="post-1" class="post-1 post type-post status-publish format-standard hentry category-uncategorized">
<header class="entry-header">
<h1 class="entry-title"><?php the_title_attribute(); ?></h1>
</header>
<!-- .entry-header -->
<div class="entry-content">
<?php if (have_posts()) : ?>
<?php while (have_posts()) : the_post(); ?>
<?php the_content(); ?>
<?php endwhile; ?>
<?php else : ?>
<?php endif; ?>
</div>
<!-- .entry-content -->
<footer class="entry-footer">
<span class="posted-on"><span class="screen-reader-text">发布于 </span><a href="<?php the_permalink(); ?>" rel="bookmark"><time class="entry-date published updated" ><?php the_date('Y-m-d') ?></time></a></span>
<span class="byline"><span class="author vcard"><span class="screen-reader-text">作者 </span><?php the_author(); ?></span></span>
</footer>
<!-- .entry-footer -->
</article>
<!-- #post-## -->
</main>
<!-- .site-main -->
</div>
<!-- .content-area -->
</div>
<!-- .site-content -->
<?php get_footer(); ?>
sample:
https://www.wikihow.com/Write-SEO-Content
https://www.cnblogs.com/yincheng/p/html5-tags.html
https://blog.csdn.net/qq_22855325/article/details/72877285
建议阅读：
https://html5-templates.com/demo/html5-page-layout/
wordpress 主题模板结构介绍
https://wp.rollby.xin/wordpress%e4%b8%bb%e9%a2%98%e5%bc%80%e5%8f%91/%e5%9f%ba%e7%a1%80/215.html