Summary of xhtml block-level tags_HTML/Xhtml_Web page production

* address - address
* blockquote - block quote
* center - center alignment block
* dir - directory list
* div - commonly used block level, also the main tag of CSS layout
* dl - definition list
* fieldset - form control group
* form - interactive form
* h1 - headline
* h2 - subtitle
* h3 - level 3 title
* h4 - Level 4 heading
* h5 - Level 5 heading
* h6 - Level 6 heading
* hr - Horizontal separator line
* isindex - input prompt
* menu - Menu list
* noframes - frames optional content, (this block content is displayed for browsers that do not support frames * noscript - )
Optional script content (this content is displayed for browsers that do not support script)
* ol - sorted form
* p - paragraph
* pre - formatted text
* table - table
* ul - unsorted list