Are WordPress Themes CSS?

WordPress themes are typically CSS files. This means you can take any existing CSS file and slap it onto a WordPress theme to give it a makeover.

Because of this, many people think WordPress themes are simply CSS files.

This isn’t entirely true. WordPress themes typically include a few files that aren’t just CSS files.

These files are called template files and they help WordPress determine what content to show on the front-end of your website. Template files also help WordPress determine how content is organized on the front-end.

So, while WordPress themes are mostly CSS files, they also include template files. This means that, in some ways, WordPress themes are more like templates than just CSS files.