Hi andrea-5600,

Please try below CSS code

.wd-grid-f-col>.wd-col.wd-gallery-item{
	margin-right: 20px;
	padding: 0;
	box-shadow: 10px 10px 10px 0 rgba(0,0,0,0.5);
    width: 95%;
    flex: 0 0 calc(95% / var(--wd-col) * var(--wd-col-wider, 1));
    max-width: calc(95% / var(--wd-col) * var(--wd-col-wider, 1));	
}

.wd-grid-f-col>.wd-col.wd-gallery-item a {
    border-radius: var(--wd-brd-radius);
}

Regards,