docs: function css(property) {
          if (cssCache[property] === undefined) {
              var domProperty = property.
                  replace(/(-[\s\S])/g, function(c) { return c.charAt(1).toUpperCase(); });
              var prefixedDom = style(domProperty);
              cssCache[property] = domToCss(prefixedDom);
          }
          return cssCache[property];
      }