This course focuses on Tailwind CSS’s Just-in-Time (JIT) mode, a feature that generates styles on-demand as you author your HTML, instead of generating a large stylesheet of all possible utility classes upfront. It covers the benefits of JIT, such as faster build times, smaller file sizes, and the ability to use arbitrary values without predefining them in a configuration file. The course shows how to enable JIT mode in a Tailwind project and demonstrates its impact on workflow efficiency. Participants learn to leverage JIT features like variant modifiers for pseudo-classes, complex responsive breakpoints, and the use of custom utilities that JIT compiles into CSS when needed. By the end of the course, learners can optimize their Tailwind CSS workflow, improving their development experience and resulting in more performant production builds.