| 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
 | | { |  |   "@charset": { |  |     "syntax": "@charset \"<charset>\";", |  |     "groups": [ |  |       "CSS Charsets" |  |     ], |  |     "status": "standard", |  |     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@charset" |  |   }, |  |   "@counter-style": { |  |     "syntax": "@counter-style <counter-style-name> {\n  [ system: <counter-system>; ] ||\n  [ symbols: <counter-symbols>; ] ||\n  [ additive-symbols: <additive-symbols>; ] ||\n  [ negative: <negative-symbol>; ] ||\n  [ prefix: <prefix>; ] ||\n  [ suffix: <suffix>; ] ||\n  [ range: <range>; ] ||\n  [ pad: <padding>; ] ||\n  [ speak-as: <speak-as>; ] ||\n  [ fallback: <counter-style-name>; ]\n}", |  |     "interfaces": [ |  |       "CSSCounterStyleRule" |  |     ], |  |     "groups": [ |  |       "CSS Counter Styles" |  |     ], |  |     "descriptors": { |  |       "additive-symbols": { |  |         "syntax": "[ <integer> && <symbol> ]#", |  |         "media": "all", |  |         "initial": "n/a (required)", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "orderOfAppearance", |  |         "status": "standard" |  |       }, |  |       "fallback": { |  |         "syntax": "<counter-style-name>", |  |         "media": "all", |  |         "initial": "decimal", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "uniqueOrder", |  |         "status": "standard" |  |       }, |  |       "negative": { |  |         "syntax": "<symbol> <symbol>?", |  |         "media": "all", |  |         "initial": "\"-\" hyphen-minus", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "orderOfAppearance", |  |         "status": "standard" |  |       }, |  |       "pad": { |  |         "syntax": "<integer> && <symbol>", |  |         "media": "all", |  |         "initial": "0 \"\"", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "uniqueOrder", |  |         "status": "standard" |  |       }, |  |       "prefix": { |  |         "syntax": "<symbol>", |  |         "media": "all", |  |         "initial": "\"\"", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "uniqueOrder", |  |         "status": "standard" |  |       }, |  |       "range": { |  |         "syntax": "[ [ <integer> | infinite ]{2} ]# | auto", |  |         "media": "all", |  |         "initial": "auto", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "orderOfAppearance", |  |         "status": "standard" |  |       }, |  |       "speak-as": { |  |         "syntax": "auto | bullets | numbers | words | spell-out | <counter-style-name>", |  |         "media": "all", |  |         "initial": "auto", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "uniqueOrder", |  |         "status": "standard" |  |       }, |  |       "suffix": { |  |         "syntax": "<symbol>", |  |         "media": "all", |  |         "initial": "\". \"", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "uniqueOrder", |  |         "status": "standard" |  |       }, |  |       "symbols": { |  |         "syntax": "<symbol>+", |  |         "media": "all", |  |         "initial": "n/a (required)", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "orderOfAppearance", |  |         "status": "standard" |  |       }, |  |       "system": { |  |         "syntax": "cyclic | numeric | alphabetic | symbolic | additive | [ fixed <integer>? ] | [ extends <counter-style-name> ]", |  |         "media": "all", |  |         "initial": "symbolic", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "uniqueOrder", |  |         "status": "standard" |  |       } |  |     }, |  |     "status": "standard", |  |     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@counter-style" |  |   }, |  |   "@document": { |  |     "syntax": "@document [ <url> | url-prefix(<string>) | domain(<string>) | media-document(<string>) | regexp(<string>) ]# {\n  <group-rule-body>\n}", |  |     "interfaces": [ |  |       "CSSGroupingRule", |  |       "CSSConditionRule" |  |     ], |  |     "groups": [ |  |       "CSS Conditional Rules" |  |     ], |  |     "status": "nonstandard", |  |     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@document" |  |   }, |  |   "@font-face": { |  |     "syntax": "@font-face {\n  [ font-family: <family-name>; ] ||\n  [ src: <src>; ] ||\n  [ unicode-range: <unicode-range>; ] ||\n  [ font-variant: <font-variant>; ] ||\n  [ font-feature-settings: <font-feature-settings>; ] ||\n  [ font-variation-settings: <font-variation-settings>; ] ||\n  [ font-stretch: <font-stretch>; ] ||\n  [ font-weight: <font-weight>; ] ||\n  [ font-style: <font-style>; ]\n}", |  |     "interfaces": [ |  |       "CSSFontFaceRule" |  |     ], |  |     "groups": [ |  |       "CSS Fonts" |  |     ], |  |     "descriptors": { |  |       "font-display": { |  |         "syntax": "[ auto | block | swap | fallback | optional ]", |  |         "media": "visual", |  |         "percentages": "no", |  |         "initial": "auto", |  |         "computed": "asSpecified", |  |         "order": "uniqueOrder", |  |         "status": "experimental" |  |       }, |  |       "font-family": { |  |         "syntax": "<family-name>", |  |         "media": "all", |  |         "initial": "n/a (required)", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "uniqueOrder", |  |         "status": "standard" |  |       }, |  |       "font-feature-settings": { |  |         "syntax": "normal | <feature-tag-value>#", |  |         "media": "all", |  |         "initial": "normal", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "orderOfAppearance", |  |         "status": "standard" |  |       }, |  |       "font-variation-settings": { |  |         "syntax": "normal | [ <string> <number> ]#", |  |         "media": "all", |  |         "initial": "normal", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "orderOfAppearance", |  |         "status": "standard" |  |       }, |  |       "font-stretch": { |  |         "syntax": "<font-stretch-absolute>{1,2}", |  |         "media": "all", |  |         "initial": "normal", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "uniqueOrder", |  |         "status": "standard" |  |       }, |  |       "font-style": { |  |         "syntax": "normal | italic | oblique <angle>{0,2}", |  |         "media": "all", |  |         "initial": "normal", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "uniqueOrder", |  |         "status": "standard" |  |       }, |  |       "font-weight": { |  |         "syntax": "<font-weight-absolute>{1,2}", |  |         "media": "all", |  |         "initial": "normal", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "uniqueOrder", |  |         "status": "standard" |  |       }, |  |       "font-variant": { |  |         "syntax": "normal | none | [ <common-lig-values> || <discretionary-lig-values> || <historical-lig-values> || <contextual-alt-values> || stylistic(<feature-value-name>) || historical-forms || styleset(<feature-value-name>#) || character-variant(<feature-value-name>#) || swash(<feature-value-name>) || ornaments(<feature-value-name>) || annotation(<feature-value-name>) || [ small-caps | all-small-caps | petite-caps | all-petite-caps | unicase | titling-caps ] || <numeric-figure-values> || <numeric-spacing-values> || <numeric-fraction-values> || ordinal || slashed-zero || <east-asian-variant-values> || <east-asian-width-values> || ruby ]", |  |         "media": "all", |  |         "initial": "normal", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "orderOfAppearance", |  |         "status": "standard" |  |       }, |  |       "src": { |  |         "syntax": "[ <url> [ format( <string># ) ]? | local( <family-name> ) ]#", |  |         "media": "all", |  |         "initial": "n/a (required)", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "orderOfAppearance", |  |         "status": "standard" |  |       }, |  |       "unicode-range": { |  |         "syntax": "<unicode-range>#", |  |         "media": "all", |  |         "initial": "U+0-10FFFF", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "orderOfAppearance", |  |         "status": "standard" |  |       } |  |     }, |  |     "status": "standard", |  |     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@font-face" |  |   }, |  |   "@font-feature-values": { |  |     "syntax": "@font-feature-values <family-name># {\n  <feature-value-block-list>\n}", |  |     "interfaces": [ |  |       "CSSFontFeatureValuesRule" |  |     ], |  |     "groups": [ |  |       "CSS Fonts" |  |     ], |  |     "status": "standard", |  |     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@font-feature-values" |  |   }, |  |   "@import": { |  |     "syntax": "@import [ <string> | <url> ] [ <media-query-list> ]?;", |  |     "groups": [ |  |       "Media Queries" |  |     ], |  |     "status": "standard", |  |     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@import" |  |   }, |  |   "@keyframes": { |  |     "syntax": "@keyframes <keyframes-name> {\n  <keyframe-block-list>\n}", |  |     "interfaces": [ |  |       "CSSKeyframeRule", |  |       "CSSKeyframesRule" |  |     ], |  |     "groups": [ |  |       "CSS Animations" |  |     ], |  |     "status": "standard", |  |     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@keyframes" |  |   }, |  |   "@media": { |  |     "syntax": "@media <media-query-list> {\n  <group-rule-body>\n}", |  |     "interfaces": [ |  |       "CSSGroupingRule", |  |       "CSSConditionRule", |  |       "CSSMediaRule", |  |       "CSSCustomMediaRule" |  |     ], |  |     "groups": [ |  |       "CSS Conditional Rules", |  |       "Media Queries" |  |     ], |  |     "status": "standard", |  |     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media" |  |   }, |  |   "@namespace": { |  |     "syntax": "@namespace <namespace-prefix>? [ <string> | <url> ];", |  |     "groups": [ |  |       "CSS Namespaces" |  |     ], |  |     "status": "standard", |  |     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@namespace" |  |   }, |  |   "@page": { |  |     "syntax": "@page <page-selector-list> {\n  <page-body>\n}", |  |     "interfaces": [ |  |       "CSSPageRule" |  |     ], |  |     "groups": [ |  |       "CSS Pages" |  |     ], |  |     "descriptors": { |  |       "bleed": { |  |         "syntax": "auto | <length>", |  |         "media": [ |  |           "visual", |  |           "paged" |  |         ], |  |         "initial": "auto", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "uniqueOrder", |  |         "status": "standard" |  |       }, |  |       "marks": { |  |         "syntax": "none | [ crop || cross ]", |  |         "media": [ |  |           "visual", |  |           "paged" |  |         ], |  |         "initial": "none", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "orderOfAppearance", |  |         "status": "standard" |  |       }, |  |       "size": { |  |         "syntax": "<length>{1,2} | auto | [ <page-size> || [ portrait | landscape ] ]", |  |         "media": [ |  |           "visual", |  |           "paged" |  |         ], |  |         "initial": "auto", |  |         "percentages": "no", |  |         "computed": "asSpecifiedRelativeToAbsoluteLengths", |  |         "order": "orderOfAppearance", |  |         "status": "standard" |  |       } |  |     }, |  |     "status": "standard", |  |     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@page" |  |   }, |  |   "@property": { |  |     "syntax": "@property <custom-property-name> {\n  <declaration-list>\n}", |  |     "interfaces": [ |  |       "CSS", |  |       "CSSPropertyRule" |  |     ], |  |     "groups": [ |  |       "CSS Houdini" |  |     ], |  |     "descriptors": { |  |       "syntax": { |  |         "syntax": "<string>", |  |         "media": "all", |  |         "percentages": "no", |  |         "initial": "n/a (required)", |  |         "computed": "asSpecified", |  |         "order": "uniqueOrder", |  |         "status": "experimental" |  |       }, |  |       "inherits": { |  |         "syntax": "true | false", |  |         "media": "all", |  |         "percentages": "no", |  |         "initial": "auto", |  |         "computed": "asSpecified", |  |         "order": "uniqueOrder", |  |         "status": "experimental" |  |       }, |  |       "initial-value": { |  |         "syntax": "<string>", |  |         "media": "all", |  |         "initial": "n/a (required)", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "uniqueOrder", |  |         "status": "experimental" |  |       } |  |     }, |  |     "status": "experimental", |  |     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@property" |  |   }, |  |   "@supports": { |  |     "syntax": "@supports <supports-condition> {\n  <group-rule-body>\n}", |  |     "interfaces": [ |  |       "CSSGroupingRule", |  |       "CSSConditionRule", |  |       "CSSSupportsRule" |  |     ], |  |     "groups": [ |  |       "CSS Conditional Rules" |  |     ], |  |     "status": "standard", |  |     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@supports" |  |   }, |  |   "@viewport": { |  |     "syntax": "@viewport {\n  <group-rule-body>\n}", |  |     "interfaces": [ |  |       "CSSViewportRule" |  |     ], |  |     "groups": [ |  |       "CSS Device Adaptation" |  |     ], |  |     "descriptors": { |  |       "height": { |  |         "syntax": "<viewport-length>{1,2}", |  |         "media": [ |  |           "visual", |  |           "continuous" |  |         ], |  |         "initial": [ |  |           "min-height", |  |           "max-height" |  |         ], |  |         "percentages": [ |  |           "min-height", |  |           "max-height" |  |         ], |  |         "computed": [ |  |           "min-height", |  |           "max-height" |  |         ], |  |         "order": "orderOfAppearance", |  |         "status": "standard" |  |       }, |  |       "max-height": { |  |         "syntax": "<viewport-length>", |  |         "media": [ |  |           "visual", |  |           "continuous" |  |         ], |  |         "initial": "auto", |  |         "percentages": "referToHeightOfInitialViewport", |  |         "computed": "lengthAbsolutePercentageAsSpecifiedOtherwiseAuto", |  |         "order": "uniqueOrder", |  |         "status": "standard" |  |       }, |  |       "max-width": { |  |         "syntax": "<viewport-length>", |  |         "media": [ |  |           "visual", |  |           "continuous" |  |         ], |  |         "initial": "auto", |  |         "percentages": "referToWidthOfInitialViewport", |  |         "computed": "lengthAbsolutePercentageAsSpecifiedOtherwiseAuto", |  |         "order": "uniqueOrder", |  |         "status": "standard" |  |       }, |  |       "max-zoom": { |  |         "syntax": "auto | <number> | <percentage>", |  |         "media": [ |  |           "visual", |  |           "continuous" |  |         ], |  |         "initial": "auto", |  |         "percentages": "the zoom factor itself", |  |         "computed": "autoNonNegativeOrPercentage", |  |         "order": "uniqueOrder", |  |         "status": "standard" |  |       }, |  |       "min-height": { |  |         "syntax": "<viewport-length>", |  |         "media": [ |  |           "visual", |  |           "continuous" |  |         ], |  |         "initial": "auto", |  |         "percentages": "referToHeightOfInitialViewport", |  |         "computed": "lengthAbsolutePercentageAsSpecifiedOtherwiseAuto", |  |         "order": "uniqueOrder", |  |         "status": "standard" |  |       }, |  |       "min-width": { |  |         "syntax": "<viewport-length>", |  |         "media": [ |  |           "visual", |  |           "continuous" |  |         ], |  |         "initial": "auto", |  |         "percentages": "referToWidthOfInitialViewport", |  |         "computed": "lengthAbsolutePercentageAsSpecifiedOtherwiseAuto", |  |         "order": "uniqueOrder", |  |         "status": "standard" |  |       }, |  |       "min-zoom": { |  |         "syntax": "auto | <number> | <percentage>", |  |         "media": [ |  |           "visual", |  |           "continuous" |  |         ], |  |         "initial": "auto", |  |         "percentages": "the zoom factor itself", |  |         "computed": "autoNonNegativeOrPercentage", |  |         "order": "uniqueOrder", |  |         "status": "standard" |  |       }, |  |       "orientation": { |  |         "syntax": "auto | portrait | landscape", |  |         "media": [ |  |           "visual", |  |           "continuous" |  |         ], |  |         "initial": "auto", |  |         "percentages": "referToSizeOfBoundingBox", |  |         "computed": "asSpecified", |  |         "order": "uniqueOrder", |  |         "status": "standard" |  |       }, |  |       "user-zoom": { |  |         "syntax": "zoom | fixed", |  |         "media": [ |  |           "visual", |  |           "continuous" |  |         ], |  |         "initial": "zoom", |  |         "percentages": "referToSizeOfBoundingBox", |  |         "computed": "asSpecified", |  |         "order": "uniqueOrder", |  |         "status": "standard" |  |       }, |  |       "viewport-fit": { |  |         "syntax": "auto | contain | cover", |  |         "media": [ |  |           "visual", |  |           "continuous" |  |         ], |  |         "initial": "auto", |  |         "percentages": "no", |  |         "computed": "asSpecified", |  |         "order": "uniqueOrder", |  |         "status": "standard" |  |       }, |  |       "width": { |  |         "syntax": "<viewport-length>{1,2}", |  |         "media": [ |  |           "visual", |  |           "continuous" |  |         ], |  |         "initial": [ |  |           "min-width", |  |           "max-width" |  |         ], |  |         "percentages": [ |  |           "min-width", |  |           "max-width" |  |         ], |  |         "computed": [ |  |           "min-width", |  |           "max-width" |  |         ], |  |         "order": "orderOfAppearance", |  |         "status": "standard" |  |       }, |  |       "zoom": { |  |         "syntax": "auto | <number> | <percentage>", |  |         "media": [ |  |           "visual", |  |           "continuous" |  |         ], |  |         "initial": "auto", |  |         "percentages": "the zoom factor itself", |  |         "computed": "autoNonNegativeOrPercentage", |  |         "order": "uniqueOrder", |  |         "status": "standard" |  |       } |  |     }, |  |     "status": "standard", |  |     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@viewport" |  |   } |  | } | 
 |