CSS2Properties doesn't have an indexed property setter for '0'

使用React时，发现chrome浏览器没事，firefox火狐浏览器报了一个CSS2Properties doesn't have an indexed property setter for '0'。

把我代码中的

<Block className='header' style={[outer.common, outer.header]} flex>

改成

<Block className='header' style={Object.assign({},outer.common, outer.header)} flex>

就OK了