Safe Listed Customizable Elements

Cornerstone supports the following customizable elements in the WYSIWYG Editor:

HTML Tags

HTML5 sections grouping content text-level semantics forms interactive elements documented elements
<a> <article> <figcaption> <bdi> <datalist> <details> <body>
<abbr> <aside> <figure> <data> <keygen> <menuitem> <head>
<acronym> <footer>   <mark> <meter> <summary> <html>
<address> <header>   <rp> <output>    
<area> <main>   <rt> <progress>    
<b> <nav>   <ruby>      
<big> <section>   <time>      
<blockquote>     <wbr>      
<br>            
<button>            
<caption>            
<center>            
<cite>            
<code>            
<col>            
<colgroup>            
<dd>            
<del>            
<dfn>            
<dir>            
<div>            
<dl>            
<dt>            
<em>            
<fieldset>            
<font>            
<form>            
<h1>            
<h2>            
<h3>            
<h4>            
<h5>            
<h6>            
<hr>            
<i>            
<img>            
<input>            
<ins>            
<kbd>            
<label>            
<legend>            
<li>            
<map>            
<menu>            
<ol>            
<optgroup>            
<option>            
<p>            
<pre>            
<q>            
<s>            
<samp>            
<select>            
<small>            
<span>            
<strike>            
<strong>            
<sub>            
<sup>            
<table>            
<tbody>            
<td>            
<textarea>            
<tfoot>            
<th>            
<thead>            
<tr>            
<tt>            
<u>            
<ul>            
<var>            

HTML Attributes

abbr
accept
accept-charset
accesskey
action
align
alt
autocomplete
autosave
axis
bgcolor
border
cellpadding
cellspacing
challenge
char
charoff
charset
checked
cite
class
clear
color
cols
colspan
compact
contenteditable
coords
datetime
dir
disabled
draggable
dropzone
enctype
for
frame
headers
height
high
href
hreflang
hspace
id
ismap
keytype
label
lang
list
longdesc
low
max
maxlength
media
method
min
multiple
name
nohref
noshade
novalidate
nowrap
open
optimum
pattern
placeholder
prompt
pubdate
radiogroup
readonly
rel
required
rev
reversed
rows
rowspan
rules
scope
selected
share
size
span
spellcheck
src
start
step
style
summary
tabindex
target
title
type
usemap
valign
value
vspace
width
wrap

CSS Properties

background
background-attachment
background-color
background-image
background-position
background-repeat
border
border-bottom
border-bottom-color
border-bottom-style
border-bottom-width
border-collapse
border-color
border-left
border-left-color
border-left-style
border-left-width
border-right
border-right-color
border-right-style
border-right-width
border-spacing
border-style
border-top
border-top-color
border-top-style
border-top-width
border-width
bottom
caption-side
clear
clip
color
content
counter-increment
counter-reset
cursor
direction
display
empty-cells
float
font
font-family
font-size
font-style
font-variant
font-weight
height
left
letter-spacing
line-height
list-style
list-style-image
list-style-position
list-style-type
margin
margin-bottom
margin-left
margin-right
margin-top
max-height
max-width
min-height
min-width
opacity
orphans
outline
outline-color
outline-style
outline-width
overflow
padding
padding-bottom
padding-left
padding-right
padding-top
page-break-after
page-break-before
page-break-inside
quotes
right
table-layout
text-align
text-decoration
text-indent
text-transform
top
unicode-bidi
vertical-align
visibility
white-space
widows
width
word-spacing
z-index

Data Attributes

All HTML5 data attributes
Attributes prefixed with data-

URI Attributes

action
background
dynsrc
href
lowsrc
src