HTML 5 Learning Note 2--Partial supplement (March 8)

1, about tags

Label not allowed to write Terminator: AREA,COLCOMMAND,EMBED,HR,IMG,KEYGEN,LINK,META,PARAM,SOURCE,TRACK,WBR

Tags that can omit the Terminator: li,dt,dd,p,rt,optgroup,option,thead,tbody,tr,td,th

Tags that can be completely omitted: Html,head, body, colgroup,tbody

2, about syntax

Case is available, but lowercase is recommended

For Boolean property values, the assignment can be omitted at the specified time, specified as true, not specified as false;

You can omit quotation marks, or use single quotes, but it is recommended to use double quotes.

3, about style sheets

Styles defined within blocks, only valid within blocks, but not recommended

HTML 5 Learning Note 2--Partial supplement (March 8)