{
 "notes": "Support can be somewhat emulated in older versions of IE using the non-standard `expression()` syntax.\r\n\r\nDue to the way browsers handle [sub-pixel rounding](http://ejohn.org/blog/sub-pixel-problems-in-css/) differently, layouts using `calc()` expressions may have unexpected results.", 
 "support": {
  "Android Browser": "y 67", 
  "Baidu Browser": "y 7.12", 
  "Blackberry Browser": "y 10", 
  "Chrome": "y 26", 
  "Chrome for Android": "y 74", 
  "Edge": "y 12", 
  "Firefox": "y 16", 
  "Firefox for Android": "y 66", 
  "IE": "a 9", 
  "IE Mobile": "y 10", 
  "KaiOS Browser": "y 2.5", 
  "Opera": "y 15", 
  "Opera Mini": "n all", 
  "Opera Mobile": "y 46", 
  "QQ Browser": "y 1.2", 
  "Safari": "y 6.1", 
  "Samsung Internet": "y 4", 
  "UC Browser for Android": "y 11.8", 
  "iOS Safari": "y 7.0"
 }, 
 "url": "https://www.w3.org/TR/css3-values/#calc"
}