Resizing events thumbnail images

Hello, 

I'm struggling to resize the logos on my charity's Events listings page: https://www.thesmallestthings.org/events 

Even when I play around with the crop, it doesn't fit and often cuts off left and right sides. 

Any tips?

Thank you! 

Insert this code in custom css:

.eventlist-column-thumbnail{
	height: auto !important;
	padding-bottom: 0 !important;
}

.eventlist-column-thumbnail img{
	object-fit: contain;
    width: 100% !important;
    left: auto !important;
    height: 100% !important;
    top: unset !important;
}