Events Page (Main) List - Two Columns?

Site URL: http://www.healinghartwellness.com/upcoming

I am trying to make the main Events page 2 columns since it looks heavy on the left-side and ugly, but I'm struggling with the specific code to use for Custom CSS. I know that the  code "p{column-count: 2; column-gap: 10%}" applies it to the whole site but I am looking for what to write prior to that. I have tried the .collection-type-events.view-list but that didn't seem to work. What am I doing wrong?

Add to Home > design > Custom CSS

@media screen and (min-width:768px) {
.eventlist--upcoming {
    display: grid;
    grid-template-columns: repeat(2,minmax(0,1fr));
}
.eventlist-event {
    margin-top: 0;
    margin-bottom: 68px;
}
}