How to apply the style changes to the ID instead of the class?

[LamaYouzghatli]

Hi,
I have two elements with the same classes. I want to apply style changes with style manager to one of these two elements. I add ID but the style applies to the class not to the ID.

What can I do?
I want to solve it from the code ..

[artf]

grapesjs.init({
	...
	selectorManager: {
        componentFirst: true,
    },
})

[LamaYouzghatli]

Thanks a lot.