code: function bulkUpdateCSS(data, callback) {
      executeNextFrame(function () {
        var i, item;
        for (i = 0; i < data.length; i++) {
          item = data[i];
          setCSS(item.el, item.css);
        }
        // Run optional callback
        if (typeof callback === 'function') {
          executeNextFrame(callback);
        }
      });
    }
docs: Update the css properties of multiple elements at the same time befor the browsers next animation frame. The parameter `data` has to be an array containing objects, each with the element and the desired css properties.