css-syntax.json

{
  "spec": {
    "title": "CSS Syntax Module Level 3",
    "url": "https://www.w3.org/TR/css-syntax-3/"
  },
  "properties": {},
  "descriptors": {},
  "valuespaces": {
    "<an+b>": {
      "value": "odd | even | <integer> | <n-dimension> | '+'? n | -n | <ndashdigit-dimension> | '+'? <ndashdigit-ident> | <dashndashdigit-ident> | <n-dimension> <signed-integer> | '+'? n <signed-integer> | -n <signed-integer> | <ndash-dimension> <signless-integer> | '+'? n- <signless-integer> | -n- <signless-integer> | <n-dimension> ['+' | '-'] <signless-integer> '+'? n ['+' | '-'] <signless-integer> | -n ['+' | '-'] <signless-integer>"
    },
    "<urange>": {
      "value": "u '+' <ident-token> '?'* | u <dimension-token> '?'* | u <number-token> '?'* | u <number-token> <dimension-token> | u <number-token> <number-token> | u '+' '?'+"
    },
    "<EOF-token>": {
      "prose": "A conceptual token representing the end of the list of tokens. Whenever the list of tokens is empty, the next input token is always an <EOF-token>."
    }
  }
}