how do I make the gap between my project thumbnail and project title shorter on mobile?

Site URL: http://www.felipemollica.com

I am trying to make the space between project thumbnail and project title smaller on mobile.
and also trying to align my website header to the thumbnails but have I am having no luck. i seem to able to adjust padding on the project thumbnails, but cant do it with the header. 

Thanks for the help in advance
 

Hi. Add to Design > Custom CSS

/* space between title - img */
@media screen and (max-width:767px) {
.portfolio-text {
    padding-top: 5px;
}
}