Can I Use in HTML Emails

Compatibility tables for CSS support in HTML emails.

Gmail
Webmail
Outlook.com
Webmail
Android 4.x
(Gmail App)
Android 5.x
(Mail App)
Apple Mail
(OS X 10.13)
Outlook
2007/10/13
iOS 12
(Mail App)
Yahoo! Mail
Webmail
CSS Background Properties
background-color
background-image
background-position
background-repeat
background-size
CSS Box and Border Properties
border
border-image
border-radius
box-shadow
height
width
max-width
min-width
CSS Media Queries
@media
*
(max-device-width)
(min-pixel-width)
(max-width)
CSS Positioning and Visibility
margin
padding
position: absolute
position: fixed
z-index
visibility: hidden
display: none
overflow: none
CSS Text Properties
@font-face
direction
font
font-family
font-style
font-variant
font-size
font-weight
letter-spacing
line-height
text-align
text-decoration
text-indent
text-overflow
text-shadow
text-transform
white-space
word-spacing
word-wrap
vertical-align
text-fill-color
text-stroke
CSS Table Properties
border-collapse
border-spacing
empty-cells
HTML
<audio>
<canvas>
<iframe>
<img srcset>
<picture>
<video>
Link Element
<link> in <head>
<link> in <body>
Style Element
<style> in <head>
<style> in <body>