The Obsidian Stylist plugin allows users to apply custom classes and styles to markdown notes, enhancing their visual appeal and functionality. This plugin supports the addition of CSS styles to specific elements within a note, such as headings or lists, enabling customizations like underlining text or creating multi-column layouts. Users can add style tags directly into their markdown files, making it easy to personalize the appearance of content. However, the plugin does not work in Live Preview mode. It processes styles carefully to avoid interfering with the rest of the Obsidian interface, providing flexibility for tailored note designs.