Changing Custom Font in Grid Title

Site URL: https://lynx-echidna-5n4h.squarespace.com/

I am trying to change all of the fonts on my website to be my custom font: "VesterbroPoster"

I have been able to successfully do this in custom css for everything except for the titles of my grids under "Our Services" and "Team"

When I inspected the relevant element, it showed the title as "h2.list-item-content_title" which I included in my custom CSS. What am I doing wrong here?  

use this code

h2 {
    font-family: 'VesterbroPoster' !important;
}

Thank you - that worked!