Hello everybody, I'm new to this forum.
I decided to build my own website (http://www.protaniviolins.com) although I'm not familiar at all with html or CSS. I'm using Responsive theme and I created a child theme to customise it, as suggested by the experts in this forum.
I'm having trouble with the front page. I've been trying to get rid of the white border at the top and bottom of the picture and to move it closer to the navigation menu. Fiddling with Chrome's Inspect element tool, I'm able to sort out the issue and place the picture where I want it to be, but when I copy and paste the CSS command with the new values into the child theme's stylesheet nothing happens. All the modified margins and paddings seem to go back to the default parent theme values. I'm clearly doing something wrong but I haven't got a clue what it could be. Any help, please?