Cobalt Support Quick Reference
Stay organized with collections
Save and categorize content based on your preferences.
HTML elements
<a>
<audio>
<body>
<br>
<div>
<head>
<html>
<link>
(with type="text/css"
)
<lottie-player>
<meta>
<script>
<span>
<style>
<title>
<video>
CSS properties
- align-content
- align-items
- align-self
- animation
- background,
background-color,
background-image
- border,
border-top,
border-bottom,
border-left,
border-right
- border-radius
- border-style
- border-width
- box-shadow
- color
- content
- display
- dpi
- flex
- flex-basis
- flex-direction
- flex-flow
- flex-grow
- flex-shrink
- flex-wrap
- font
- @font-face
- font-family
- font-size
- font-style
- font-weight
- justify-content
- line-height
- margin,
margin-top,
margin-bottom,
margin-left,
margin-right
- max-height,
max-width
- @media
- opacity
- order
- overflow
- padding,
padding-top,
padding-bottom,
padding-left,
padding-right
- position
- top,
bottom,
left,
right
- transform
- transform-origin
- transition
- transition-delay
- transition-duration
- transition-property
- transition-timing-function
- text-align
- text-indent
- text-overflow
- text-shadow
- text-transform
- vertical-align
(supported values:
top
, bottom
, middle
, baseline
)
- visibility
- white-space
- z-index
CSS selectors
- Simple selectors:
'*',
type,
.class,
#id,
:empty,
:focus,
:not()
- Pseudo elements:
:before,
:after,
- Combinators:
' ',
'>',
'+',
'~'
- Grouping with ','
JavaScript Web APIs
Protocols
Containers
- FLV
- MKV (for WebM)
- MP4/FMP4
- WAV
- 16-bit stereo PCM audio (for sound effects)
- AAC
- AV1
- AVC (H.264) at 1080p/60fps (Level
4.2)
- Dolby Digital (AC-3)
- Dolby Digital Plus (Enhanced AC-3, or EAC-3)
- HEVC (H.265)
- VP8/Vorbis
- VP9/Opus
Images
- JPEG
- PNG
- WebP (including animated)
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2023-12-12 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2023-12-12 UTC."],[[["This webpage documents supported HTML elements, CSS properties and selectors, JavaScript Web APIs, protocols and media formats."],["Supported HTML elements include basic structure tags, media elements, and interactive components like Lottie animations."],["Comprehensive styling is possible with a range of CSS properties covering layout, fonts, colors, and visual effects, along with selectors for targeting elements."],["JavaScript Web APIs enable interactions with web pages through features like fetching data, manipulating the DOM, handling media, and managing storage."],["Supported media formats ensure playback of common audio, video, and image formats through various encodings and container types."]]],[]]