CSS/properties: add box-align (#2739)
CSS/properties: add box-align (#2739)

* CSS/properties: add box-align

Source: https://developer.mozilla.org/en-US/docs/Web/CSS/box-align#Browser_compatibility

* box-align: -webkit -> -webkit-

* Fix nits

chrisdavidmills/browser-compat-data,teoli2003/browser-compat-data,mdn/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data