Critical CSS is a vital technique for improving website initial loading performance. In this blog post, we delve into what Critical CSS is and why it's important. We cover steps to improve initial loading performance, common issues, and other ways to improve web page performance. We evaluate the benefits of Critical CSS, tips for smart usage, and benchmarking tools. We highlight the impact of Critical CSS on web performance with success stories and future trends. In the Applications section, we offer practical advice for achieving success with Critical CSS. What is Critical CSS and Why Is It Important? Critical CSS is an optimized subset of CSS that defines the style of content displayed on a web page's initial load. The goal is to...