CSS Support Matrix - HTML Email Client Compatibility | MailViewr

Overview

This matrix shows the support status for CSS properties across different email clients. Use it to quickly determine which CSS features you can safely use in your email templates.

YesProperty is supported across all tested versions

PartialProperty is supported in some versions or with limitations

NoProperty is not supported

CSS × Email Client Matrix

Scroll horizontally to see all email clients. Click any CSS property to view detailed information.

CSS Property	AOL	Apple Mail	Fastmail	Free.fr	Gmail	GMX	Hey	IONOS 1&1	La Poste	Mail.ru	Orange Mail	Outlook	ProtonMail	Rainloop	Samsung Email	SFR	T-Online	Thunderbird	Web.de	WP.pl	Yahoo Mail
accent-color	No	Partial	No	?	No	?	Yes	?	?	Yes	No	No	No	?	Yes	Partial	?	?	?	?	No
align-items	No	Yes	Yes	?	No	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
animation	No	Yes	Yes	?	No	Partial	Yes	Partial	Partial	No	No	Partial	No	?	Yes	Partial	?	Yes	Partial	?	No
aspect-ratio	No	Partial	No	?	No	Partial	Yes	Yes	Yes	Yes	No	No	Yes	?	No	Yes	?	No	Partial	?	No
@font-face	No	Yes	No	?	No	Partial	Yes	Partial	Partial	No	Partial	Partial	Partial	?	Yes	Partial	?	Yes	Partial	?	No
@import	No	Yes	No	?	No	Partial	Yes	Partial	No	No	Partial	Partial	Partial	?	No	No	?	Partial	Partial	No	No
@keyframes	Partial	Yes	Yes	?	No	Partial	Yes	Partial	Partial	No	No	Partial	No	?	Yes	Partial	?	Yes	Partial	?	Partial
@media (-webkit-device-pixel-ratio)	No	Yes	Yes	?	No	Partial	Yes	Yes	Partial	No	Yes	Partial	Partial	?	Yes	Partial	?	No	Partial	?	No
@media (hover), @media (any-hover)	No	Yes	?	?	No	?	?	?	No	No	?	Partial	Yes	?	Yes	Partial	?	?	?	?	No
@media (orientation)	No	Partial	Yes	?	Partial	Yes	Yes	Yes	Partial	Yes	Partial	Partial	No	?	Partial	Partial	?	Partial	Yes	?	No
@media (prefers-color-scheme)	No	Partial	Partial	Yes	No	Partial	Partial	Yes	Partial	No	Partial	Partial	No	?	Partial	Partial	No	Partial	Partial	?	No
@media (prefers-reduced-motion)	No	Yes	No	?	No	Partial	Yes	Yes	Partial	No	Yes	Partial	Partial	?	Yes	Partial	?	No	Partial	?	No
@media	Partial	Yes	Yes	?	Partial	Yes	Yes	Yes	Partial	Partial	Yes	Partial	Partial	?	Partial	Partial	?	Partial	Yes	?	Partial
@supports	Yes	Yes	No	?	No	Partial	Yes	Yes	Partial	No	Yes	Partial	Partial	?	Yes	Partial	?	Partial	Partial	?	Yes
backdrop-filter	No	Partial	?	?	No	No	?	?	?	Yes	No	Partial	?	?	Yes	Yes	?	?	No	?	No
background-blend-mode	No	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
background-clip	No	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
background-color	Yes	Yes	Yes	?	Yes	Partial	Yes	Yes	Yes	Yes	Partial	Yes	Yes	?	Yes	Yes	?	Yes	Partial	?	Yes
background-image	Partial	Yes	Yes	No	Partial	Partial	Yes	Yes	Yes	Yes	Yes	Partial	Yes	?	Partial	Yes	No	Yes	Partial	?	Partial
background-origin	No	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
background-position	Yes	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Yes	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	Yes
background-repeat	Yes	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Yes	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	Yes
background-size	Yes	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	Yes
background	Partial	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	Partial
block-size & inline-size	No	Partial	Yes	?	No	Partial	Yes	Yes	Yes	Yes	No	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
border-collapse	Yes	Yes	?	?	Yes	Yes	?	?	?	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
border-image	No	Yes	Yes	?	No	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
border-inline & border-block individual logical properties	No	Partial	?	?	No	Partial	?	Yes	?	Yes	?	Partial	Yes	?	Partial	Yes	?	?	Partial	?	No
border-inline & border-block longhand properties	No	Partial	?	?	No	Partial	?	Yes	?	Yes	?	Partial	Yes	?	Yes	Yes	?	?	Partial	?	No
border-inline & border-block	No	Partial	?	?	No	Partial	?	Yes	?	Yes	?	No	Yes	?	No	Yes	?	?	Partial	?	No
border-radius logical properties	No	Partial	?	?	No	?	?	?	?	Yes	?	No	Yes	?	No	Yes	?	?	?	?	No
border-radius	Partial	Yes	Yes	?	Yes	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	Partial
border-spacing	Yes	Yes	?	?	Yes	Yes	?	?	?	Yes	?	Partial	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
border	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Partial	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
box-shadow	No	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
box-sizing	No	Yes	Yes	?	Partial	Yes	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Yes	?	No
caption-side	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Partial	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
clear	Partial	Partial	?	?	Partial	Partial	?	?	?	Yes	?	Partial	Yes	?	Yes	?	?	?	Partial	?	Partial
clip-path	No	Partial	Yes	?	No	Partial	Yes	Yes	Yes	Partial	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
color-scheme CSS property	No	Yes	No	?	No	No	No	?	?	No	?	No	Partial	?	Yes	Partial	No	Yes	No	?	No
column-count	No	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Yes	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
css column properties	No	Yes	Yes	?	Yes	?	Yes	?	?	Yes	?	Partial	Yes	?	Yes	Yes	?	Yes	?	?	No
CSS comments	Partial	Yes	?	?	Partial	No	?	?	Partial	Partial	No	Yes	?	?	Yes	Partial	?	Yes	No	?	Partial
conic-gradient()	No	Yes	Yes	No	No	?	Yes	?	Yes	Yes	No	Partial	Yes	?	Partial	Yes	Yes	Yes	?	?	No
cursor	?	Partial	?	?	No	Partial	?	?	?	?	?	No	Partial	?	?	?	?	Yes	?	?	Partial
direction	Yes	Yes	Yes	?	Partial	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
display:flex	Partial	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	Partial
display:grid	No	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
display:none	Yes	Yes	Yes	?	Partial	Yes	Yes	Yes	Yes	Yes	Yes	Partial	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
display	Partial	Yes	Partial	?	Partial	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	Partial
empty-cells	Partial	Yes	?	?	Yes	?	?	?	?	No	?	Partial	Yes	?	Yes	?	?	?	?	?	Partial
filter	No	Yes	No	?	No	Partial	Yes	Yes	Yes	Partial	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
flex-direction:column	No	Yes	Yes	?	No	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
flex-wrap: wrap	No	Yes	Yes	?	No	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
float	Partial	Partial	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Yes	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	Partial
font-kerning	No	Yes	?	Yes	Yes	No	?	?	?	No	?	Partial	Yes	?	Yes	Yes	No	Yes	?	?	No
font-size	Partial	Yes	?	?	Yes	Partial	?	?	?	Yes	?	Partial	?	?	Partial	?	?	Yes	Partial	?	Partial
font-stretch	No	Yes	?	?	Partial	?	?	?	?	Yes	?	Partial	Yes	?	No	Partial	?	Yes	?	?	No
font-weight	Partial	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Yes	?	Partial
font shorthand	Yes	Yes	Yes	?	Partial	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
clamp()	No	Partial	No	?	Partial	Partial	Yes	Yes	Yes	Yes	No	No	Yes	?	No	Yes	?	Yes	Partial	?	No
light-dark()	No	Yes	?	No	No	No	Partial	?	Partial	Partial	No	No	Partial	?	Partial	Partial	Partial	Partial	?	?	No
max()	No	Yes	No	?	Partial	Partial	Yes	Yes	Yes	Yes	No	Partial	Yes	?	No	Yes	?	Yes	Partial	?	No
min()	No	Yes	No	?	Partial	Partial	Yes	Yes	Yes	Yes	No	Partial	Yes	?	No	Yes	?	Yes	Partial	?	No
gap, column-gap, row-gap	No	Yes	Partial	Yes	Partial	No	Yes	?	Yes	Yes	No	Partial	Yes	?	Yes	Yes	Yes	Yes	?	?	No
grid-template-* properties	No	Yes	No	Yes	No	No	Yes	?	Yes	Yes	No	Partial	Yes	?	Yes	Yes	Yes	Yes	?	?	No
height property	No	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Partial	Yes	?	Yes	Yes	?	Yes	Yes	?	No
hyphenate-character	No	Partial	?	?	No	No	?	?	?	Partial	?	No	?	?	Yes	?	?	?	No	?	No
hyphenate-limit-chars	No	No	?	?	No	No	?	?	?	Yes	?	No	?	?	No	?	?	No	No	?	No
hyphens	No	Yes	?	?	No	?	?	?	?	Yes	?	Partial	?	?	Yes	Yes	?	?	?	?	No
!important keyword	Partial	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	No	Partial	Partial	?	Yes	Partial	?	Yes	Partial	No	Partial
inline-size	No	No	No	?	No	Partial	Yes	Yes	Yes	Yes	Partial	No	Yes	?	Yes	Yes	?	Yes	Partial	?	No
inset	No	Partial	?	?	No	No	?	?	?	No	?	No	?	?	No	?	?	Yes	No	?	No
fit-content, min-content, max-content	No	Yes	Yes	?	Partial	?	Yes	?	Yes	Yes	No	Partial	Yes	?	No	Yes	?	Yes	?	?	No
justify-content	No	Yes	Yes	?	No	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
left, right, top, bottom	No	Yes	Yes	?	No	Yes	Yes	Yes	Yes	Partial	Yes	Partial	Yes	?	Partial	Yes	?	Yes	Yes	?	No
letter-spacing	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Partial	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
line-height	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
linear-gradient()	No	Yes	Yes	Yes	Partial	Partial	Yes	Yes	Yes	Yes	No	Partial	Yes	?	Partial	Yes	Yes	Yes	Partial	?	No
list-style-image	No	Yes	Yes	?	No	Yes	Yes	Yes	Yes	Yes	Partial	Partial	Partial	?	Yes	Yes	?	Yes	Yes	?	No
list-style-position	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Partial	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
list-style-type	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
list-style	Partial	Yes	Yes	?	Partial	Yes	Yes	Yes	Yes	Yes	Yes	Partial	Partial	?	Yes	Yes	?	Yes	Yes	?	Partial
margin-block-start & margin-block-end	No	Partial	?	?	No	Partial	?	Yes	?	Yes	?	Partial	Yes	?	Yes	?	?	?	Partial	?	No
margin-inline & margin-block	No	Partial	Yes	?	No	Partial	Yes	Yes	Yes	Yes	Yes	No	Yes	?	No	Yes	?	Yes	Partial	?	No
margin-inline-start & margin-inline-end	No	Partial	?	?	No	Partial	?	Yes	?	Yes	?	Partial	Yes	?	Yes	?	?	?	Partial	?	No
margin	Partial	Yes	Yes	?	Partial	Yes	Yes	Yes	Yes	Partial	Yes	Partial	Yes	?	Yes	Yes	?	Yes	Yes	?	Partial
mask-image	No	Partial	?	?	No	No	?	?	?	Yes	?	Partial	?	?	Yes	?	?	?	No	?	No
max-block-size	No	Yes	?	?	No	?	?	?	?	Yes	?	Partial	Yes	?	Yes	?	?	?	?	?	No
max-height property	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Partial	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
max-inline-size	No	Yes	?	?	No	No	?	?	?	Yes	?	No	Yes	?	Yes	?	?	?	No	?	No
max-width	Partial	Partial	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Partial	Partial	?	Yes	Yes	?	Yes	Yes	?	Partial
min-block-size	No	Yes	?	?	No	No	?	?	?	Yes	?	No	Yes	?	Yes	?	?	?	No	?	No
min-height property	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Partial	Partial	?	Yes	Partial	?	Yes	Yes	?	Yes
min-inline-size	No	Yes	?	?	No	?	?	?	?	Yes	?	Partial	Yes	?	Yes	?	?	?	?	?	No
min-width property	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Partial	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
mix-blend-mode	No	Yes	No	?	Partial	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
lch(), oklch(), lab(), oklab()	No	Yes	Yes	?	No	?	Yes	?	?	Yes	?	Partial	Partial	?	No	?	?	No	?	?	No
CSS Nesting	No	Partial	?	?	No	?	?	?	?	No	Partial	Partial	?	?	Partial	Partial	?	Partial	?	?	No
object-fit	No	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	No	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
object-position	No	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	No	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
opacity	No	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	No	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	Partial
orphans	No	Yes	?	?	No	No	?	?	?	Yes	?	Partial	?	?	Yes	?	?	?	No	?	No
outline-offset	No	Yes	Yes	Yes	No	No	Yes	?	Yes	Yes	No	Partial	Yes	?	Yes	Yes	Yes	Yes	?	?	No
outline	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	Partial	Yes	?	Yes	Yes	Yes	Yes	Yes	?	Yes
overflow-wrap	No	Partial	?	?	No	?	?	?	?	Yes	?	Partial	?	?	Yes	?	?	?	?	?	No
overflow	Partial	Partial	Yes	?	Partial	Partial	Yes	Yes	Yes	Partial	Partial	Partial	Partial	?	Partial	Yes	?	Yes	Partial	?	Partial
padding-block-start & padding-block-end	No	Partial	?	?	No	Partial	?	Yes	?	Yes	?	Partial	Yes	?	Yes	?	?	?	Partial	?	No
padding-inline & padding-block	No	Partial	?	?	No	Partial	?	Yes	?	Yes	?	No	Yes	?	No	?	?	?	Partial	?	No
padding-inline-start & padding-inline-end	No	Partial	?	?	No	Partial	?	Yes	?	Yes	?	Partial	Yes	?	Yes	?	?	?	Partial	?	No
padding	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Partial	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
position	Partial	Partial	Partial	?	No	Yes	Partial	Yes	Partial	No	Partial	Partial	Yes	?	Partial	Partial	?	Yes	Yes	?	Partial
:active	Partial	Partial	Yes	?	No	Yes	Yes	Yes	Partial	No	Partial	Partial	Yes	?	No	Partial	?	Yes	Yes	?	Yes
:checked	Yes	Yes	Yes	?	No	Partial	No	No	No	No	No	Partial	No	?	Yes	No	?	Yes	Partial	?	Yes
:first-child	Yes	Yes	Yes	?	No	Yes	Yes	Yes	Partial	No	Yes	Partial	Partial	?	Yes	Partial	?	Yes	Yes	?	Yes
:first-of-type	Yes	Yes	Yes	?	No	Partial	Yes	Yes	Partial	No	Yes	Partial	Partial	?	Yes	Partial	?	Yes	Partial	?	Yes
:focus	Partial	Partial	Yes	?	No	Partial	Yes	Partial	Partial	No	Partial	Partial	Yes	?	Yes	Partial	?	Yes	Partial	?	Yes
:has()	No	Partial	Partial	?	No	Partial	Yes	Yes	Partial	No	Partial	Partial	Partial	?	Partial	Partial	?	No	Partial	?	No
:hover	Partial	Yes	Yes	?	Partial	Partial	Yes	Yes	Partial	No	Yes	Partial	Yes	?	Yes	Partial	?	Yes	Partial	?	Yes
lang()	No	Yes	?	?	No	?	?	?	No	No	?	Partial	Yes	?	Yes	No	?	?	?	?	No
:last-child	Yes	Yes	Yes	?	No	Yes	Yes	Yes	Partial	No	Yes	Partial	Partial	?	Yes	Partial	?	Yes	Yes	?	Yes
:last-of-type	Yes	Yes	Yes	?	No	Partial	Yes	Yes	Partial	No	Yes	Partial	Partial	?	Yes	Partial	?	Yes	Partial	?	Yes
:link	Yes	Yes	Yes	?	No	Yes	Yes	Yes	Partial	No	Yes	Partial	Partial	?	Yes	Partial	?	Yes	Yes	?	Yes
:not	No	Yes	Yes	?	No	Partial	Yes	Yes	Partial	No	Yes	Partial	Partial	?	Yes	Partial	?	Yes	Partial	?	No
:nth-child	No	Yes	Yes	?	No	Partial	Yes	Yes	Partial	No	Yes	Partial	Partial	?	Yes	Partial	?	Yes	Partial	?	No
:nth-last-child	No	Yes	Yes	?	No	Partial	Yes	Yes	Partial	No	Yes	Partial	Partial	?	Yes	Partial	?	Yes	Partial	?	No
:nth-last-of-type	No	Yes	Yes	?	No	Partial	Yes	Yes	Partial	No	Yes	Partial	No	?	Yes	Partial	?	Yes	Partial	?	No
:nth-of-type	No	Yes	Yes	?	No	Partial	Yes	Yes	Partial	No	Yes	Partial	No	?	Yes	Partial	?	Yes	Partial	?	No
:only-child	Yes	Yes	Yes	?	No	Yes	Yes	Yes	Partial	No	Yes	Partial	Partial	?	Yes	Partial	?	Yes	Yes	?	Yes
:only-of-type	Yes	Yes	Yes	?	No	Yes	Yes	Yes	Partial	No	Yes	Partial	Partial	?	Yes	Partial	?	Yes	Yes	?	Yes
:target	Partial	No	No	?	No	Partial	No	No	No	No	Partial	Partial	Partial	?	Yes	Partial	?	Yes	Partial	?	Yes
:visited	Partial	No	Yes	?	No	Partial	Yes	Partial	Partial	No	Partial	Partial	No	?	No	Partial	?	Yes	Partial	?	Yes
::after	No	Yes	Yes	?	No	Partial	Yes	Yes	Partial	No	Partial	Partial	Partial	?	Yes	Partial	?	Yes	Partial	?	No
::before	No	Yes	Yes	?	No	Partial	Yes	Yes	Partial	No	Partial	Partial	Partial	?	Yes	Partial	?	Yes	Partial	?	No
::first-letter	Yes	Yes	Yes	?	No	Yes	Yes	Yes	Partial	No	Partial	Partial	Partial	?	Yes	Partial	?	Yes	Yes	?	Yes
::first-line	Yes	Yes	Yes	?	No	Yes	Yes	Yes	Partial	No	Partial	Partial	Partial	?	Yes	Partial	?	Yes	Yes	?	Yes
::marker	Yes	Yes	Yes	?	No	?	Yes	?	Partial	No	Partial	Partial	Partial	?	Yes	Partial	?	Yes	?	?	Yes
::placeholder	Yes	Yes	Yes	?	No	Partial	No	No	No	No	No	Partial	No	?	Yes	No	?	Yes	Partial	?	Yes
radial-gradient()	No	Yes	Yes	Yes	Partial	Partial	Yes	Yes	Yes	Yes	Yes	Partial	Yes	?	Yes	Yes	Yes	Yes	Partial	?	No
resize	No	Partial	?	?	No	No	?	?	?	Yes	No	No	No	?	Yes	No	?	?	No	?	No
rgb()	Partial	Partial	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	Partial
rgba()	Partial	Partial	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	No	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	Partial
scroll-snap	No	Yes	No	?	No	?	Yes	?	Yes	Yes	No	Partial	Yes	?	Yes	Yes	?	Yes	?	?	No
Adjacent sibling combinator	Yes	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Yes	Partial	Partial	?	Yes	Partial	?	Yes	Partial	?	Yes
Attribute selector	Partial	Yes	Yes	?	Partial	Partial	Yes	Partial	Yes	Partial	Yes	Partial	No	?	Yes	Partial	?	Yes	Partial	?	Partial
Chaining selectors	Yes	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Partial	?	Yes	Partial	?	Yes	Partial	?	Partial
Child combinator	Yes	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Partial	?	Yes	Partial	?	Yes	Partial	?	Partial
Class selector	Yes	Yes	Yes	?	Partial	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Partial	?	Yes	Partial	?	Yes	Yes	?	Partial
Descendant combinator	Yes	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Yes	Yes	Partial	?	Yes	Partial	?	Yes	Partial	?	Partial
General sibling combinator	Yes	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Yes	Partial	Partial	?	Yes	Partial	?	Yes	Partial	?	Yes
Grouping selectors	Yes	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Yes	Yes	Partial	?	Yes	Partial	?	Yes	Partial	?	Partial
ID selector	Yes	Yes	Yes	?	Partial	Yes	Yes	Partial	Yes	Yes	Yes	Yes	Partial	?	Yes	Partial	?	Yes	Yes	?	Partial
Type selector	Yes	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Yes	Yes	Partial	?	Yes	Partial	?	Yes	Partial	?	Partial
Universal selector *	Yes	Yes	Yes	?	Partial	Yes	Yes	Yes	Yes	No	Yes	Partial	Partial	?	Yes	Partial	?	Yes	Yes	?	Partial
shape-margin	No	Yes	?	?	No	?	?	?	?	Yes	?	Partial	?	?	Yes	?	?	Yes	?	?	No
shape-outside	No	Yes	?	?	No	?	?	?	?	Yes	?	Partial	?	?	Yes	?	?	Yes	?	?	No
system-ui, ui-serif, ui-sans-serif, ui-rounded, ui-monospace	Partial	Yes	Yes	?	Partial	Yes	Yes	?	Yes	Yes	Partial	Partial	Partial	?	Partial	Partial	Yes	Partial	?	?	Partial
tab-size	No	Yes	?	?	No	Partial	?	Partial	?	No	?	Partial	?	?	Yes	?	?	?	Partial	?	No
table-layout	Yes	Yes	?	?	Yes	?	?	?	?	Yes	?	Partial	Yes	?	Yes	?	?	?	?	?	Yes
text-align-last	No	Partial	?	Yes	Yes	?	?	?	?	Yes	?	Partial	Yes	?	Yes	?	Yes	?	?	?	No
text-align	Partial	Yes	Yes	?	Partial	Yes	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Yes	?	Partial
text-decoration-color	Yes	Partial	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	Yes
text-decoration-line	Partial	Partial	?	?	Partial	No	?	?	?	Yes	?	Partial	Yes	?	Yes	?	?	Yes	No	?	Partial
text-decoration-skip-ink	No	Partial	Yes	?	No	No	Yes	?	Yes	Yes	No	No	Yes	?	Yes	Yes	?	Yes	No	?	No
text-decoration-style	Partial	Partial	?	?	Partial	No	?	?	?	Yes	?	Partial	Yes	?	Yes	?	?	Yes	No	?	Partial
text-decoration-thickness	No	Partial	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Partial	?	Partial	Partial	?	Partial	Partial	?	No
text-decoration	Yes	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Partial	?	Yes	Partial	?	Yes	Partial	?	Yes
text-emphasis-position	No	Yes	?	?	No	Partial	?	Yes	?	Yes	?	Partial	Yes	?	No	?	?	?	Partial	?	No
text-emphasis	No	Yes	?	?	Partial	Partial	?	Yes	?	Yes	?	Partial	Yes	?	No	?	?	?	Partial	?	No
text-indent	Partial	Yes	Yes	?	Partial	Yes	Yes	Yes	Yes	Partial	Yes	Yes	Yes	?	Yes	Yes	?	Yes	Yes	?	Partial
text-justify	No	No	?	?	Partial	Partial	?	?	?	Partial	?	Partial	?	?	No	?	?	?	No	?	Partial
text-orientation	No	Partial	?	?	Partial	No	?	?	?	Yes	?	Partial	Yes	?	Yes	?	?	Yes	No	?	No
text-overflow	No	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	No	Yes	?	Yes	Partial	?	No
text-shadow	Yes	Yes	Yes	?	No	Yes	Yes	Yes	Yes	Yes	Yes	Partial	Yes	?	Yes	Yes	?	Yes	Yes	?	Partial
text-transform	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Partial	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
text-underline-offset	No	Yes	Yes	?	No	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Partial	?	Yes	Partial	?	Yes	Partial	?	No
text-underline-position	No	Partial	?	?	Partial	No	?	?	?	Yes	?	Partial	Yes	?	Yes	?	?	Yes	No	?	No
text-wrap	No	Yes	?	?	No	No	?	?	?	Yes	?	No	?	?	Yes	?	?	?	No	?	No
transform	No	Yes	Yes	?	No	Partial	Yes	Yes	Yes	No	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
transition	Partial	Yes	Yes	Yes	No	?	Partial	?	Yes	Yes	No	No	Partial	?	Partial	Partial	?	Yes	?	?	Partial
CSS calc() function	No	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
ch unit	No	Yes	Yes	?	Yes	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
cm unit	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
em unit	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
ex unit	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
in unit	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
initial unit	No	Yes	Yes	?	Partial	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
mm unit	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
pc unit	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
% unit	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
pt unit	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
px unit	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
rem unit	No	Yes	Yes	?	Yes	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
vh unit	Yes	Partial	No	?	Yes	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Partial	?	Yes	Partial	?	Yes
vmax unit	No	Yes	Yes	?	Yes	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
vmin unit	No	Yes	Yes	?	Yes	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Partial	?	Yes	Partial	?	No
vw unit	Yes	Yes	No	?	Yes	Partial	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	Yes
user-select	No	Partial	?	?	No	No	?	?	?	Yes	?	No	?	?	Yes	?	?	?	No	?	No
CSS Variables (Custom Properties)	No	Yes	No	?	No	Partial	Yes	Yes	Yes	No	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
vertical-align	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
visibility	Partial	Yes	Yes	?	No	Yes	Yes	Yes	Yes	Yes	Partial	Partial	Yes	?	Yes	Yes	?	Yes	Yes	?	Partial
white-space-collapse	No	Partial	?	?	No	?	?	?	?	Yes	?	No	?	?	Yes	?	?	?	?	?	No
white-space	Yes	Yes	Yes	?	Partial	Partial	Yes	Partial	Yes	Yes	Yes	Partial	Yes	?	No	Partial	?	Yes	Partial	?	Partial
widows	No	Yes	?	?	No	No	?	?	?	Yes	?	Partial	?	?	Yes	?	?	?	No	?	No
width property	Yes	Yes	Yes	?	Yes	Yes	Yes	Yes	Partial	Yes	Yes	Partial	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes
word-break	No	Partial	Yes	?	Partial	Partial	Partial	Partial	Yes	Yes	Partial	Partial	Partial	?	Partial	Yes	?	Yes	Partial	?	No
word-spacing	Partial	Yes	?	?	Yes	Partial	?	?	?	Yes	?	Partial	Yes	?	Yes	?	?	Yes	Partial	?	Partial
word-wrap	?	Yes	?	?	Partial	?	?	?	?	?	?	Partial	?	?	?	?	?	?	?	?	Yes
writing-mode	No	Yes	No	?	Partial	Partial	Yes	Yes	Yes	Yes	No	Partial	Yes	?	Yes	Yes	?	Yes	Partial	?	No
z-index	Yes	Yes	Yes	?	No	Yes	Yes	Yes	Yes	No	Yes	Partial	Yes	?	Yes	Yes	?	Yes	Yes	?	Yes

How to Use This Matrix

Find your CSS property: Locate the CSS property you want to use in the left column
Check email client support: Look across the row to see which clients support it
Click for details: Click the property name to access in-depth documentation
View compatibility details: On the detail page, see version-specific support and workarounds

Related Resources

Email Client Support Matrix - See what features each email client supports
Email Client Quirks Database - Learn about client-specific rendering issues
CSS Support Reference - Detailed guides for individual CSS properties