OJS 2.4.6 Add images to footer without grey line

hi everyone,
i want to ask if someone knows how to add images with a link to a footer without the grey link line. I think i have to try to find out where the stylesheet is, to change it, but i do not find it . does anyone knows where i can find it ?
i show to common.css but there isn’t.

You can add CSS overrides in Journal Setup, Step 5.6 under “Journal Style Sheet”.

See a resource such as http://www.computerhope.com/issues/ch000060.htm for the question of actually removing the border from the image.

thanks for the fast reply, i will try it tomorrow .