How to make portfolio spread all the way across screen and to top of page/bottom of header?

Site URL: https://www.twinforkswindow.com/work

Wondering how to make my portfolio take up the entire page similar to http://www.stelleco.com/architecture. I can do this with a simple grid gallery set to full bleed but there's no option to do it with a portfolio.

9 hours ago, TFWC said:

Site URL: https://www.twinforkswindow.com/work

Wondering how to make my portfolio take up the entire page similar to http://www.stelleco.com/architecture. I can do this with a simple grid gallery set to full bleed but there's no option to do it with a portfolio.

Add to Design > Custom CSS

div#gridThumbs {
    padding: 0 !important;
    max-width: 100% !important;
    grid-gap: 0 !important;
}