{
  "id": "html-xml-lang-mismatch",
  "selector": "html[lang][xml\\:lang]",
  "matches": "xml-lang-mismatch-matches",
  "tags": ["cat.language", "wcag2a", "wcag311", "ACT"],
  "metadata": {
    "description": "Ensure that HTML elements with both valid lang and xml:lang attributes agree on the base language of the page",
    "help": "HTML elements with lang and xml:lang must have the same base language"
  },
  "all": ["xml-lang-mismatch"],
  "any": [],
  "none": []
}