def self.attributes
@attributes ||= Set.new %w(
align-content align-items align-self alignment-adjust
alignment-baseline all anchor-point animation
animation-delay animation-direction animation-duration
animation-fill-mode animation-iteration-count animation-name
animation-play-state animation-timing-function appearance
azimuth backface-visibility background background-attachment
background-clip background-color background-image
background-origin background-position background-repeat
background-size baseline-shift binding bleed bookmark-label
bookmark-level bookmark-state bookmark-target border
border-bottom border-bottom-color border-bottom-left-radius
border-bottom-right-radius border-bottom-style
border-bottom-width border-collapse border-color
border-image border-image-outset border-image-repeat
border-image-slice border-image-source border-image-width
border-left border-left-color border-left-style
border-left-width border-radius border-right
border-right-color border-right-style border-right-width
border-spacing border-style border-top border-top-color
border-top-left-radius border-top-right-radius
border-top-style border-top-width border-width bottom
box-align box-decoration-break box-direction box-flex
box-flex-group box-lines box-ordinal-group box-orient
box-pack box-shadow box-sizing break-after break-before
break-inside caption-side clear clip clip-path
clip-rule color color-profile columns column-count
column-fill column-gap column-rule column-rule-color
column-rule-style column-rule-width column-span
column-width content counter-increment counter-reset
crop cue cue-after cue-before cursor direction display
dominant-baseline drop-initial-after-adjust
drop-initial-after-align drop-initial-before-adjust
drop-initial-before-align drop-initial-size
drop-initial-value elevation empty-cells filter fit
fit-position flex flex-basis flex-direction flex-flow
flex-grow flex-shrink flex-wrap float float-offset
font font-family font-feature-settings
font-kerning font-language-override font-size
font-size-adjust font-stretch font-style font-synthesis
font-variant font-variant-alternates font-variant-caps
font-variant-east-asian font-variant-ligatures
font-variant-numeric font-variant-position font-weight
grid-cell grid-column grid-column-align grid-column-sizing
grid-column-span grid-columns grid-flow grid-row
grid-row-align grid-row-sizing grid-row-span
grid-rows grid-template hanging-punctuation height
hyphenate-after hyphenate-before hyphenate-character
hyphenate-lines hyphenate-resource hyphens icon
image-orientation image-rendering image-resolution
ime-mode inline-box-align justify-content
left letter-spacing line-break line-height
line-stacking line-stacking-ruby line-stacking-shift
line-stacking-strategy list-style list-style-image
list-style-position list-style-type margin
margin-bottom margin-left margin-right margin-top
mark marker-offset marks mark-after mark-before
marquee-direction marquee-loop marquee-play-count
marquee-speed marquee-style mask max-height max-width
min-height min-width move-to nav-down
nav-index nav-left nav-right nav-up object-fit
object-position opacity order orphans outline
outline-color outline-offset outline-style
outline-width overflow overflow-style overflow-wrap
overflow-x overflow-y padding padding-bottom
padding-left padding-right padding-top
page page-break-after page-break-before
page-break-inside page-policy pause pause-after
pause-before perspective perspective-origin
phonemes pitch pitch-range play-during pointer-events
position presentation-level punctuation-trim quotes
rendering-intent resize rest rest-after rest-before
richness right rotation rotation-point ruby-align
ruby-overhang ruby-position ruby-span size speak
speak-as speak-header speak-numeral speak-punctuation
speech-rate src stress string-set
tab-size table-layout target target-name
target-new target-position text-align
text-align-last text-combine-horizontal
text-decoration text-decoration-color
text-decoration-line text-decoration-skip
text-decoration-style text-emphasis
text-emphasis-color text-emphasis-position
text-emphasis-style text-height text-indent
text-justify text-orientation text-outline
text-overflow text-rendering text-shadow
text-space-collapse text-transform
text-underline-position text-wrap top
transform transform-origin transform-style
transition transition-delay transition-duration
transition-property transition-timing-function
unicode-bidi vertical-align
visibility voice-balance voice-duration
voice-family voice-pitch voice-pitch-range
voice-range voice-rate voice-stress voice-volume
volume white-space widows width word-break
word-spacing word-wrap writing-mode z-index
)
end