How can i space out the links in my portfolio Hover?

Site URL: https://goldenskyfilmsandphoto.squarespace.com

Hello!

How can I (through custom css) move my vertical stacked links closer together?

In the "Design" tab of my portfolio editor, i have it set to 0, but i'd like them even closer together. I was able to customize the font, colors, etc of this section with CSS, but i cannot figure out the link vertical spacing / line height.

(Attaching an image for section reference)

Site: https://goldenskyfilmsandphoto.squarespace.com

Pass: goldensky

Add to Design > Custom CSS

h1.portfolio-hover-item-title {
    line-height: 10px !important;
}