11ty is a static site generator that allows developers to build fast, modern websites using HTML, Markdown, and other templating languages, without the need for a complex build system.

Tailwind CSS is a utility-first CSS framework that provides pre-defined classes for building responsive and customizable user interfaces.

PostCSS is a popular open-source tool that enables web developers to transform CSS styles with JavaScript plugins. It allows for efficient processing of CSS styles, from applying vendor prefixes to improving browser compatibility, ultimately resulting in cleaner, faster, and more maintainable code.