I recommend using Sass imports wherever possible.
Suppose we have the following code written in our own CSS:
@import "style1.css"; @import "style2.css"; @import "style3.css";
As a result, you get one file that loads other files. These requests are sent separately to your server, and you get 3 files in response. Just look at the developer console to notice this problem.
In Sass files, files are combined into a single file (using the frontend workflow that you use), and this is just one request to your server.
source share