Need help on using SweetAlert

I'm using Laravel and added package from https://github.com/uxweb/sweet-alert

I did as mention in the docs section at the package repo then following the instruction to download it from https://sweetalert.js.org/guides/ using

npm install sweetalert --save

I go to webproject/node_modules/sweetalert/dist I found only the js file.

Where is the css which I can insert in my View?

(Note: this is first time I'm using npm)

via Chebli Mohamed