HTML属性英文缩写速查

<img src= "https:sjfksj.png" alt= "Firefox icon"/> alt = alternative text在搜索引擎图片抓取的时候能给到更有效的推荐，并且在盲人读屏的时候会读出。

favicon = favorites icon

<link rel= 'icon' href= 'favicon.ico' type= 'image/x-icon' /> rel = relationship

href = hyperlink reference

邮件头字段(field) 常用"cc","bcc","subject","body". Carbon copy Blind Carbon copy
分别代表"抄送","密件抄送","主题","内容".

cite = citations

colspan和rowspan属性 colspan =colume span

一个单位：em和rem=root em