It’s a given that no two WordPress themes are created equal. So, keep in mind that your WordPress theme might not comply 100% with what you read in the following sections.
That said, it’s more than likely that the CSS used to present your WordPress site is located in a file called style.css. This is a common name for a stylesheet for any type of website, not just a WordPress website.
If you look at that file, you’ll find that it includes comprehensive stylistic ‘instructions’ for your theme. It’s beyond the scope of this tutorial to cover CSS syntax in complete detail, but if you want to delve deeper into it, we recommend you start with W3Schools’ course here.
With that out of the way, let’s move onto the aforementioned three methods for editing CSS!