/* deprecated single colon syntax for pseudo-classes that have become pseudo-elements */

:after {}
:before {}
:first-letter {}
:first-line {}
div:after {}
div:before {}
div:first-letter {}
div:first-line {}

/* -moz- prefixed pseudo-elements */

::-moz-anonymous-block {}
::-moz-anonymous-positioned-block {}
::-moz-canvas {}
::-moz-cell-content {}
::-moz-focus-inner {}
::-moz-focus-outer {}
::-moz-inline-table {}
::-moz-math-stretchy {}
::-moz-page {}
::-moz-page-sequence {}
::-moz-pagebreak {}
::-moz-pagecontent {}
::-moz-placeholder {}
::-moz-progress-bar {}
::-moz-range-thumb {}
::-moz-range-track {}
::-moz-selection {}
::-moz-scrolled-canvas {}
::-moz-scrolled-content {}
::-moz-scrolled-page-sequence {}
::-moz-svg-foreign-content {}
::-moz-table {}
::-moz-table-cell {}
::-moz-table-column {}
::-moz-table-column-group {}
::-moz-table-outer {}
::-moz-table-row {}
::-moz-table-row-group {}
::-moz-viewport {}
::-moz-viewport-scroll {}
::-moz-xul-anonymous-block {}

/* pseudo-elements */

::after {}
::before {}
::content {}
::first-letter {}
::first-line:hover {}
::grammar-error {}
::placeholder {}
::selection {}
::shadow {}
::spelling-error {}
::view-transition {}

::view-transition-group(*) {}
::view-transition-group(root) {}
::view-transition-group(ident) {}
::view-transition-old(*) {}
::view-transition-old(root) {}
::view-transition-old(ident) {}
::view-transition-new(*) {}
::view-transition-new(root) {}
::view-transition-new(ident) {}
::view-transition-image-pair(*) {}
::view-transition-image-pair(root) {}
::view-transition-image-pair(ident) {}

/* -moz- prefixed pseudo-classes */

:-moz-locale-dir() {}
:-moz-locale-dir(ltr) {}
:-moz-locale-dir(rtl) {}
:-moz-system-metric(images-in-menus) {}
:-moz-system-metric(mac-graphite-theme) {}
:-moz-system-metric(-moz-maemo-classic) {}
:-moz-system-metric(device-pixel-ratio) {}
:-moz-system-metric(scrollbar-end-backward) {}
:-moz-system-metric(scrollbar-end-forward) {}
:-moz-system-metric(scrollbar-start-backward) {}
:-moz-system-metric(scrollbar-start-forward) {}
:-moz-system-metric(scrollbar-thumb-proportional) {}
:-moz-system-metric(touch-enabled) {}
:-moz-system-metric(windows-classic) {}
:-moz-system-metric(windows-compositor) {}
:-moz-system-metric(windows-glass) {}
:-moz-system-metric(windows-theme) {}
:-moz-system-metric(windows-default-theme) {}
:-moz-tree-cell-text(hover) {}
:-moz-tree-row(hover) {}

:-moz-any {}
:-moz-any-link {}
:-moz-bound-element {}
:-moz-broken {}
:-moz-drag-over {}
:-moz-first-node {}
:-moz-focusring {}
:-moz-full-screen {}
:-moz-full-screen-ancestor {}
:-moz-handler-blocked {}
:-moz-handler-crashed {}
:-moz-handler-disabled {}
:-moz-last-node {}
:-moz-list-bullet {}
:-moz-list-number {}
:-moz-loading {}
:-moz-lwtheme {}
:-moz-lwtheme-brighttext {}
:-moz-lwtheme-darktext {}
:-moz-only-whitespace {}
:-moz-read-only {}
:-moz-read-write {}
:-moz-suppressed {}
:-moz-submit-invalid {}
:-moz-tree-checkbox {}
:-moz-tree-cell {}
:-moz-tree-cell-text {}
:-moz-tree-column {}
:-moz-tree-drop-feedback {}
:-moz-tree-image {}
:-moz-tree-indentation {}
:-moz-tree-line {}
:-moz-tree-progressmeter {}
:-moz-tree-row {}
:-moz-tree-separator {}
:-moz-tree-twisty {}
:-moz-ui-invalid {}
:-moz-ui-valid {}
:-moz-user-disabled {}
:-moz-window-inactive {}

/* -ms- prefixed pseudo-classes */

:-ms-input-placeholder {}
:-ms-keyboard-active {}

/* -webkit- prefixed pseudo-elements */

::-webkit-validation-bubble-message {}
::-webkit-validation-bubble-arrow-clipper {}
::-webkit-validation-bubble-arrow {}
::-webkit-validation-bubble {}
::-webkit-slider-thumb {}
::-webkit-search-results-decoration {}
::-webkit-search-results-button {}
::-webkit-search-decoration {}
::-webkit-search-cancel-button {}
::-webkit-scrollbar-track-piece {}
::-webkit-scrollbar-track {}
::-webkit-scrollbar-thumb {}
::-webkit-scrollbar-corner {}
::-webkit-scrollbar-button {}
::-webkit-scrollbar {}
::-webkit-progress-value {}
::-webkit-progress-bar {}
::-webkit-outer-spin-button {}
::-webkit-meter-suboptimum-value {}
::-webkit-meter-optimum-value {}
::-webkit-meter-even-less-good-value {}
::-webkit-media-controls-volume-slider-container {}
::-webkit-media-controls-volume-slider {}
::-webkit-media-controls-toggle-closed-captions-button {}
::-webkit-media-controls-timeline-container {}
::-webkit-media-controls-timeline {}
::-webkit-media-controls-time-remaining-display {}
::-webkit-media-controls-seek-forward-button {}
::-webkit-media-controls-seek-back-button {}
::-webkit-media-controls-rewind-button {}
::-webkit-media-controls-return-to-realtime-button {}
::-webkit-media-controls-play-button {}
::-webkit-media-controls-panel {}
::-webkit-media-controls-mute-button {}
::-webkit-media-controls-fullscreen-button {}
::-webkit-media-controls-current-time-display {}
::-webkit-inner-spin-button {}
::-webkit-full-page-media {}
::-webkit-file-upload-button {}

/* -webkit- prefixed pseudo-classes */

:-webkit-any {}
:-webkit-full-screen {}

/* pseudo-classes */

:dir(ltr) {}
:drop() {}              /* (active\s+)?(valid\s+)?(invalid+)? */
:drop(valid) {}              /* (active\s+)?(valid\s+)?(invalid+)? */
:drop(valid active invalid) {}
:matches() {}          /* these pseudo-classes take selector lists as arguments */
:matches(:matches()) {}
:not(:matches()) {}    /* :not() can't be nested within itself or :matches() - can't enforce this with regex */
:not() {}
button:not([DISABLED]) {}
*:not(div) {}
html|*:not(:link):not(:visited) {}
:has() {}
a:has(> img) {}
dt:has(+ dt) {}
section:not(:has(h1, h2, h3, h4, h5, h6)) {}
section:has(:not(h1, h2, h3, h4, h5, h6)) {}
:nth-child() {}         /* (An+B [of sel]?) */
:nth-child(even) {}
:nth-child(10n - 1) {}
:nth-child(10n+9) {}
li:nth-child(-n+3 of .important) {}
li.important:nth-child(-n+3) {}
:nth-last-child() {}
tr:nth-last-child(-n+2)  {}  /* represents the two last rows of an HTML table */
foo:nth-last-child(odd) {}

:lang(de-DE) {}         /* language range is a BCP 47 identifier */
:lang(*-DE) {}
:lang(az-Arab-x-AZE-derbend) {}
:lang(cmn-Hans-CN) {}
:lang(de) {}
:lang(de-CH-1901) {}
:lang(de-CH-x-phonebk) {}
:lang(de-DE) {}
:lang(de-Qaaa) {}
:lang(en-a-myext-b-another) {}
:lang(en-US) {}
:lang(en-US-u-islamcal) {}
:lang(es-419) {}
:lang(fr) {}
:lang(hy-Latn-IT-arevela) {}
:lang(i-enochian) {}
:lang(ja) {}
:lang(qaa-Qaaa-QM-x-southern) {}
:lang(sl-IT-nedis) {}
:lang(sl-nedis) {}
:lang(sl-rozaj) {}
:lang(sl-rozaj-biske) {}
:lang(sr-Cyrl) {}
:lang(sr-Latn) {}
:lang(sr-Latn-QM) {}
:lang(sr-Latn-RS) {}
:lang(sr-Qaaa-RS) {}
:lang(x-whatever) {}
:lang(yue-HK) {}
:lang(zh-cmn-Hans-CN) {}
:lang(zh-CN-a-myext-x-private) {}
:lang(zh-Hans) {}
:lang(zh-Hans-CN) {}
:lang(zh-Hant) {}
:lang(zh-yue-HK) {}


:nth-of-type() {}            /* (An+B) - can be implemented without begin-end match. just copy an+b rule into this rule*/
img:nth-of-type(2n+1) { float: right; }
img:nth-of-type(2n) { float: left; }
:nth-last-of-type() {}
body > h2:nth-of-type(n+2):nth-last-of-type(n+2) {}
body > h2:not(:first-of-type):not(:last-of-type) {}
:nth-column() {}
:nth-column(even) {}
:nth-column(10n-1) {}
:nth-last-column() {}
:nth-last-column(10n+9) {}

:active {}
:any-link {}
:blank {}
:checked {}
:current {}
:default {}
:disabled {}
:drop {}
:empty {}
:enabled {}
:first-child{}
:first-of-type {}
:focus {}
:future{}
:hover {}
:in-range {}
:indeterminate {}
:invalid {}
:last-child {}
:last-of-type {}
:link {}
:only-child {}
:only-of-type {}
:optional {}
:out-of-range {}
:past {}
:placeholder-shown {}
:read-only {}
:read-write {}
:required {}
:root {}
:scope {}
:target {}
:user-error {}
:valid {}
:visited {}

/* An+B */

:nth-of-type(2n+0 ) {}
:nth-of-type(even) {}
:nth-of-type(4n+1) {}
:nth-of-type(-1n+6) {}
:nth-of-type( -4n+10 ) {}
:nth-of-type(0n+5) {}
:nth-of-type(5) {}
:nth-of-type(1n+0) {}
:nth-of-type(n+0) {}
:nth-of-type(n) {}
:nth-of-type(2n+0) {}
:nth-of-type(2n) {}
:nth-of-type(3n-6) {}
:nth-of-type(3n + 1) {}    /* whitespace ok */
:nth-of-type(+3n - 2) {}
:nth-of-type(-n+ 6) {}
:nth-of-type(+6) {}

/* invalid An+B */

:nth-of-type(3n + -6) {}
:nth-of-type(3 n) {}    /* invalid whitespace */
:nth-of-type(+ 2n) {}
:nth-of-type(+ 2) {}

/* invalid pseudo-classes */

:not(:not())    {}     /* can't nest :not() inside :not() or :matches(), but can't enforce this with regex */
:matches(:not()) {}
:nth-child(10n+-1) {}

/* universal selector */

* {}
* {

}

/* html tags */

abbr {}
address {}
area {}
article {}
aside {}
audio {}
a {}
base {}
bdi {}
bdo {}
blockquote {}
body {}
br {}
button {}
b {}
canvas {}
caption {}
cite {}
code {}
colgroup {}
col {}
datalist {}
data {}
dd {}
del {}
details {}
dfn {}
div {}
dl {}
dt {}
embed {}
em {}
fieldset {}
figcaption {}
figure {}
footer {}
form {}
h1 {}
h2 {}
h3 {}
h4 {}
h5 {}
h6 {}
header {}
head {}
hr {}
html {}
iframe {}
img {}
input {}
ins {}
i {}
kbd {}
keygen {}
label {}
legend {}
link {}
li {}
main {}
map {}
mark {}
math {}
menuitem {}
menu {}
meta {}
meter {}
nav {}
noscript {}
object {}
ol {}
optgroup {}
option {}
output {}
param {}
pre {}
progress {}
p {}
q {}
rp {}
rt {}
ruby {}
samp {}
script {}
section {}
select {}
small {}
source {}
span {}
strong {}
style {}
sub {}
summary {}
sup {}
svg {}
s {}
table {}
tbody {}
td {}
template {}
textarea {}
tfoot {}
thead {}
th {}
time {}
title {}
track {}
tr {}
ul {}
u {}
var {}
video {}
wbr {}

/* :not(s1, s2) */

button:not([DISABLED]) {}
*:not(FOO) {}
html|*:not(:link):not(:visited) {}

/* :matches(s1, s2) */

*|*:matches(:hover, :focus) {}
*|*:matches(*:hover, *:focus) {}
aaa |*:matches(*:hover, *:focus) {}
hello|*:matches(*:hover, *:focus) {}
hello  |*:matches(*:hover, *:focus) {}
ans\aa|*:matches(*:hover, *:focus) {}

/* :has(rs1, rs2) */

a:has(> img) {}
dt:has(+ dt) {}
section:not(:has(h1, h2, h3, h4, h5, h6)) {}
section:has(:not(h1, h2, h3, h4, h5, h6)) {}

/* class selector */

*.pastoral { color: green; }
.pastoral { color: green; }
h1.pastoral { color: green; }
p.pastoral.marine { color: green; }

/* id selector */

h1#chapter1 {}
#chapter1 {}
*#z98y {}

/* attribute selector */

h1[title] {}
span[class="example"] {}
span[  hello= "Cleveland"] [goodbye='Columbus'] {}
a[rel~="copyright"] { ... }
a[href="http://www.w3.org/"] { ... }
a[hreflang=fr] {}
a[hreflang|="en"] {}
object[type^="image/" 'hi' 'hi'] {}
a[href$=".html"] {}
p[title*="hello" "hi" hi there 'sup'] {}
[frame=hsides i j k] { border-style: solid none; }
[foo\aasdf\asd|\at\aaaaat=val] { color: blue; }
[*|att] { color: yellow; }
[\aasdf\asd|att] { color: green; }
[att] { color: green; }
[|*] { color: green; }
[*|*] { color: green; }
[*] { color: green; }
[ns|*] { color: green; }
[attr] {}
[attr=value] {}
[attr~=value] {}
[attr|=value] {}
[attr^=value] {}
[attr$=value] {}
[attr*=value] {}

/* :dir() pseudo-class */

div:dir(ltr) {}
div:dir(rtl) {}

/* :lang() pseudo-class */

html:lang(fr-be) {}
html:lang(de) {}
:lang(fr-be) > q {}
:lang(de) > q {}
:lang(de-*) > q {}
:lang(*-fr) > q {}

/* :any-link pseudo-class */

div:any-link {}
:any-link {}

/* :link history pseudo-class */

div:link {}
.footnote:link {}
div:visited {}
.footnote:visited  {}

/* :target pseudo-class */

p.note:target {}
*:target { color: red; }
*:target::before { content: url('target.png'); }

/* :scope pseudo-class */

div:scope {}
.footnote:scope {}

/* time dimensional pseudo-classes */

:current {
  background: yellow;
}
:current(p, li, dt, dd) {
  background: yellow;
}
:past {
  background: yellow;
}
:future {
  background: yellow;
}

/* user-action pseudo-classes */

a:link    {} /* unvisited links */
a:visited {} /* visited links */
a:hover   {} /* user hovers */
a:active  {} /* active links */
a:focus   {}
a:focus:hover {}
a:drop(active) {}
a:drop( valid ) {}
a:drop(invalid)   {}
a:drop(valid active ) {}

/* :enabled :disabled pseudo-classes */

div:enabled {}
:disabled {}

/* mutability pseudo-classes */

div:read-only {}
:read-write {}

/* :placeholder-shown pseudo-class */

div:placeholder-shown {}
:placeholder-shown {}

/* :default pseudo-class */

div:default {}
:default {}

/* :checked pseudo-class */

div:checked {}
:checked {}
:not(:checked) {}

/* :indeterminate */

div:indeterminate {}
:indeterminate {}

/* validity pseudo-classes */

div:valid {}
:valid {}
div:invalid {}
:invalid {}

/* range pseudo-classes */

div:in-range {}
:in-range {}
div:out-of-range {}
:out-of-range {}

/* :required, :optional pseudo-classes */

div:required {}
:required {}
div:optional {}
:optional {}

/* the rest */

div:root {}
:root {}
div:empty {}
:empty {}
div:blank {}
:blank {}
:nth-child(even) {}   /* represents the 2nd, 4th, 6th, etc elements */
:nth-child(10n-1) {}  /* represents the 9th, 19th, 29th, etc elements */
:nth-child(10n+9) {}  /* Same */
    :nth-child(10n+-1) {} /* Syntactically invalid, and would be ignored */
li:nth-child(-n+3 of .important) {}
li.important:nth-child(-n+3) {}
tr:nth-child(even) {
  background: silver;
}
tr:nth-child(even of :not([hidden])) {
  background: silver;
}
tr:nth-last-child(-n+2) {}    /* represents the two last rows of an HTML table */

foo:nth-last-child(odd) {}    /* represents all odd foo elements in their parent element,
                              counting from the last one */
* > a:first-child {} /* a is first child of any element */
a:first-child {} /* Same (assuming a is not the root element) */
ol > li:last-child {}
ol > li:only-child {}
img:nth-of-type(2n+1) { float: right; }
img:nth-of-type(2n) { float: left; }
body > h2:nth-of-type(n+2):nth-last-of-type(n+2) {}
body > h2:not(:first-of-type):not(:last-of-type) {}
dl dt:first-of-type {}
tr > td:last-of-type {}
tr > td:only-of-type {}

/* combinators */

div * p {}
div p *[href] {}
body > p {}
div ol>li p {}
math + p {}
h1.opener + h2 {}
h1 ~ pre {}
h1 /ident/ pre {}
col.selected || td {
  background: gray;
  color: white;
  font-weight: bold;
}

/* grid structural pseudo-classes */

div:nth-column(2n+1) {}
:nth-column(2n) {}
div:nth-last-column(2n+1) {}
:nth-last-column(2n) {}

/* deprecated tags */

acronym {}
applet {}
basefont {}
bgsound {}
big {}
blink {}
center {}
dir {}
font {}
frameset {}
frame {}
hgroup {}
isindex {}
listing {}
marquee {}
multicol {}
nextid {}
nobr {}
noembed {}
noframes {}
plaintext {}
spacer {}
strike {}
tt {}
xmp {}