How to assign multiple classes to one HTML element?

[Doogiemuc]

Hello GrapeJS Team!

First of all GrapeJS is aswesome ! I've seldomly seen a free open source product with such a complexity and quality! Keep up the good work!

I'd have one question about Selectors in GraphJS Studio. I understand that one can add multiple selectors to one element which then forms a CSS in the form of .classOne.classTwo.classThree. But this feels counter intuitive. In most cases web designers want to assign multiple classes to one HTML element, so for example:

<div class="row col-2 mb-5">

How can I do that in GraphJS Studio?