{
  "after": {
    "spec": "https://drafts.csswg.org/css-pseudo-4/#selectordef-after",
    "is-generated": true
  },
  "backdrop": {
    "spec": "https://drafts.csswg.org/css-position-4/#selectordef-backdrop"
  },
  "before": {
    "spec": "https://drafts.csswg.org/css-pseudo-4/#selectordef-before",
    "is-generated": true
  },
  "details-content": {
    "spec": "https://drafts.csswg.org/css-pseudo-4/#selectordef-details-content"
  },
  "file-selector-button": {
    "spec": "https://drafts.csswg.org/css-pseudo-4/#selectordef-file-selector-button"
  },
  "fill": {
    "spec": "https://drafts.csswg.org/css-forms-1/#selectordef-fill"
  },
  "first-letter": {
    "spec": "https://drafts.csswg.org/css-pseudo-4/#selectordef-first-letter"
  },
  "first-line": {
    "spec": "https://drafts.csswg.org/css-pseudo-4/#selectordef-first-line"
  },
  "marker": {
    "spec": "https://drafts.csswg.org/css-pseudo-4/#selectordef-marker"
  },
  "placeholder": {
    "spec": "https://drafts.csswg.org/css-pseudo-4/#selectordef-placeholder"
  },
  "selection": {
    "spec": "https://drafts.csswg.org/css-pseudo-4/#selectordef-selection"
  },
  "thumb": {
    "spec": "https://drafts.csswg.org/css-forms-1/#selectordef-thumb"
  },
  "track": {
    "spec": "https://drafts.csswg.org/css-forms-1/#selectordef-track"
  }
}