strong元素:表示重要的内容,加粗效果
b元素:单纯是变粗下效果
em元素:强调,倾斜效果
i元素:仅倾斜效果
del元素:删除线
ins元素:插入
s元素:表示不正确
u元素:下划线,
mark元素:表标记文本的作用
sup元素、sub元素:表化学方程式之类
small元素:字变小
<b>This text is bold</b> <br> <strong>This text is strong</strong> <br> <big>This text is big</big> <br> <em>This text is emphasized</em> <br> <i>This text is italic</i> <br> <small>This text is small</small> <br> This text contains <sub>subscript</sub> <br> This text contains <sup>superscript</sup> <br> This text contains <s>contains</s> <br> This text contains <del>This text is incorrect</del> <br> This text contains <ins>hhhhhhhh</ins> <br> This <u>text</u> contains
HTML的格式化