{
  "title":"selector list argument of :nth-child and :nth-last-child CSS pseudo-classes",
  "description":"The newest versions of `:nth-child()` and `:nth-last-child()` accept an optional `of S` clause which filters the children to only those which match the selector list `S`. For example, `:nth-child(1 of .foo)` selects the first child among the children that have the `foo` class (ignoring any non-`foo` children which precede that child). Similar to `:nth-of-type`, but for arbitrary selectors instead of only type selectors.",
  "spec":"https://drafts.csswg.org/selectors/#the-nth-child-pseudo",
  "status":"unoff",
  "links":[
    {
      "url":"https://bugzilla.mozilla.org/show_bug.cgi?id=854148",
      "title":"Mozilla Bug 854148 - Support for :nth-child(An+B of sel), :nth-last-child(An+B of sel) pseudo-classes"
    },
    {
      "url":"https://bugs.chromium.org/p/chromium/issues/detail?id=304163",
      "title":"Chromium Issue 304163: Implement :nth-child(an+b of S) and :nth-last-child(an+b of S) pseudo-classes"
    },
    {
      "url":"https://wpdev.uservoice.com/forums/257854-microsoft-edge-developer/suggestions/15944476",
      "title":"MS Edge feature request on UserVoice"
    }
  ],
  "bugs":[
    
  ],
  "categories":[
    "CSS"
  ],
  "stats":{
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    "edge":{
      "12":"n",
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      "14":"n"
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    "firefox":{
      "2":"n",
      "3":"n",
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      "3.6":"n",
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    "safari":{
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      "4":"n",
      "5":"n",
      "5.1":"n",
      "6":"n",
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      "7":"n",
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      "8":"n",
      "9":"y",
      "9.1":"y",
      "10":"y",
      "TP":"y"
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    "opera":{
      "9":"n",
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      "10.0-10.1":"n",
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    "ios_saf":{
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      "4.0-4.1":"n",
      "4.2-4.3":"n",
      "5.0-5.1":"n",
      "6.0-6.1":"n",
      "7.0-7.1":"n",
      "8":"n",
      "8.1-8.4":"n",
      "9.0-9.2":"y",
      "9.3":"y",
      "10-10.1":"y"
    },
    "op_mini":{
      "all":"n"
    },
    "android":{
      "2.1":"n",
      "2.2":"n",
      "2.3":"n",
      "3":"n",
      "4":"n",
      "4.1":"n",
      "4.2-4.3":"n",
      "4.4":"n",
      "4.4.3-4.4.4":"n",
      "53":"n"
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    "bb":{
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    "op_mob":{
      "10":"n",
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    "and_chr":{
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    "and_ff":{
      "50":"n"
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    "ie_mob":{
      "10":"n",
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    "and_uc":{
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    "samsung":{
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  },
  "notes":"",
  "notes_by_num":{
    
  },
  "usage_perc_y":10.77,
  "usage_perc_a":0,
  "ucprefix":false,
  "parent":"",
  "keywords":"nth-child,nth-last-child,nth,child,an,b,of,s,sel,selector,list",
  "ie_id":"",
  "chrome_id":"",
  "firefox_id":"",
  "webkit_id":"feature-css-selector-:nth-child(an+b-of-selector-list)-and-:nth-last-child(an+b-of-selector-list)",
  "shown":true
}