class命名（及前端命名）

常见class关键词：

• 布局类：header, footer, container, main, content, aside, page, section
• 包裹类：wrap, inner
• 区块类：region, block, box
• 结构类：hd, bd, ft, top, bottom, left, right, middle, col, row, grid, span
• 列表类：list, item, field
• 主次类：primary, secondary, sub, minor
• 大小类：s, m, l, xl, large, small
• 状态类：active, current, checked, hover, fail, success, warn, error, on, off
• 导航类：nav, prev, next, breadcrumb, forward, back, indicator, paging, first, last
• 交互类：tips, alert, modal, pop, panel, tabs, accordion, slide, scroll, overlay,
• 星级类：rate, star
• 分割类：group, seperate, divider
• 等分类：full, half, third, quarter
• 表格类：table, tr, td, cell, row
• 图片类：img, thumbnail, original, album, gallery
• 语言类：cn, en
• 论坛类：forum, bbs, topic, post
• 方向类：up, down, left, right
• 其他语义类：btn, close, ok, cancel, switch; link, title, info, intro, more, icon; form, label, search, contact, phone, date, email, user; view, loading...

• 例如：text改为txt、delete改为del，这里针对单个单词组合命名，对词组单词的组合建议不使用缩写或简写。