Getting all the Gutenberg css

Hi! Is there a way for me to see all the css of gutenberg frontend. I was able to devise a way to use gutenberg based wordpress post on my site (laravel based site). It copies all the source code for the post and pushes it to my site. But the issue is that the classes called are not working on my site. So I want to copy all the css class stylings and add it to my less folder. so that it compiles with my css.

Please how do I access all the class styling.