WordPress: specific stylesheet

Self-tutoring about coding with WordPress: the tutor mentions stylesheet specificity.

A stylesheet is a file type that contains directions for how a web site will be displayed: font, font color, font size, etc.

WordPress includes styles but part of its customization potential is that a user can add their own. This would typically be done by coding an extra stylesheet, then having WordPress load that one as well. The extra stylesheet might be included conditionally. Hence, one can get a rendering specific to one post.

Source:

developer.wordpress.org: wp_enqueue_style()