Use BEM, as opposed to individual utility type classes, otherwise you create a kit where you can’t change the styling for multiple buttons in multiple places at once.
we already use BEM but the problem is that by using it you may end up having different classes for showing the same icon.
Here an example with an icon used in the “team card block” and in the “product card block” with same styling:
.team-card__icon
.product-card_icon
Let’s say I want to use the same icon style, for both block but as I’m using BEM system I need to name them based on the block name, I would end up having multiple classes showing the same thing.