Can Chrome developer window overwrite the css rules at the sametime?

[nozyattaing]

Currently I am using browser 's developer mode to test whether the element is at the right position, However , I find that it takes sometime whenever I need to change .Everytime I need to test on browser and go to the corresponding css file to edit it . So , I am wondering are there any way to directly edit the css file in chrome developer mode? Thanks a lot