How to create a working example of a react component in the codesandbox sandbox or similar?

Question

React

Guys, welcome. It is necessary to create a working code example in the sandbox (I use codesandbox.io in my work) For example, several libraries are used in the work of the react component: react-bootstrap, reactstrap. I include as dependencies. However, styles are not loaded. Tell me how to connect styles from libraries that I connect as dependencies so that the component is displayed normally and you can create a demo with the code? How to understand in which folder the style file is located and how to export it? Thanks in advance.