How Do I Create Custom Styles for ExchangeWP
When creating custom styles for Exchange, you won't want to edit the exchange.css file directly as any changes you make would be overwritten with an update to Exchange.
Instead, create a directory in your child theme called exchange. The directory path would look something like this:
Then you'll create a file named style.css where you'll add your custom CSS, then upload the file to the exchange directory you created in your child theme.