css () {
    /* istanbul ignore else */
    if (arguments.length === 1) {
      /* istanbul ignore else */
      if (isString(arguments[0])) {
        return this.getStyle(arguments[0])
      } else if (isObject(arguments[0])) {
        forEach(arguments[0], function (value, name) {
          this.setStyle(name, value)
        }.bind(this))
      } else {
        throw new Error('Illegal arguments.')
      }
    } else if (arguments.length === 2) {
      this.setStyle(arguments[0], arguments[1])
    } else {
      throw new Error('Illegal arguments.')
    }
    return this
  }
jQuery style method to set or get inline CSS styles.

    @param {String} name the style name
    @param {String} [value] the style value
    @returns {String|this} the style value or this if used as a setter