is it possible to create css using SWC in Next js?

[romanusname]

I am creating a SWC plugin for Next js. I have no problem finding the "background" attribute.
<div background="red"></div>

Using SWC, I add a unique class to this element instead of an attribute.
<div class="uniqueStyle642"></div>

I need to create css using SWC.

.uniqueStyle642{
        background:red;
}

Any ideas how this can be done?

An empty css file may already be created and imported into the application.
I need to somehow add style.