<thead>
<footer>
<tfoot>
<tbody>
<label>
<caption>
<title>
Browser
Compiler
Database
Text Editor
Video
Voice
Image
Syntax
<link>
<script>
<style>
<css>
Server-only
Client-side
Class Selector
Tag Selector
ID Selector
Universal Selector
text-color
font-color
font-style
color
Child Selector
Descendant Selector
Adjacent Selector
~
>
+
*
href="_blank"
open="new"
target="_blank"
new="tab"
<!-- comment -->
// comment
/* comment */
# comment
borderspacing
cellpadding
cellspacing
colspan
<ol>
<ul>
<li>
<item>
<dt>
<dl>
<dd>
value
method
type
action
placeholder
id
name