Board Thread:Support Requests - Getting Technical/@comment-24142930-20180411190850/@comment-5558012-20180411193040

Perhaps the biggest consequence of using it is that it can lead to unintended styling problems like styling stuff you don't want styled (or shouldn't be styling, like the global nav) and making it more difficult to do specific styling later on, leading to a domino like effect. Most people use it when they can't find the proper selector or are too lazy to do so. Sometimes that really is too difficult and you need to use it, but you should make an effort not to use it.