Can I use CSS in WordPress?

Of course, WordPress supports custom CSS. You can add CSS within the Customizer, with theme settings, via child themes, or through a CSS plugin. Custom CSS enables you to modify spacing, typography, colors, animations, and more. Even if you use a page builder, CSS is usually the quickest option to edit designs. Many people learn CSS simply to modify WordPress layouts. With custom CSS, you can fully override any theme defaults without touching core files. Since WordPress generates clean HTML markup, it is quite easy to target specific elements and then create unique visual styles suited to your brand.