How to reduce (poster style) image block spacing so that it works on mobile & desktop

Site URL: https://www.tleighton.com/links

Hi,

I would like to reduce the padding of the images on my 'links' page to 10px.  I tried adjusting the code for the page, but it left me with uneven vertical spacing when viewed on mobile. 

Thanks for your help!

Add to Design > Custom CSS > Then save & Reload the site

/* Links page image padding */
@media screen and (min-width:768px) {
div#page-section-5ed13e84b208c225133de0d7 .image-block {
    padding: 5px !important;
}
}

Perfect - thank you!