My website's CSS is really bloated. Is there a tool that will remove elements that do not change my website's appearance, based on my current HTML source files?
Some tools can help you remove unused CSS styles from your website. One such tool is UnCSS. Website: https://github.com/uncss/uncss

UnCSS is a tool that analyzes your HTML source files and removes any CSS styles that are not used on your website. It works by running your website through a headless browser, which allows it to determine which types are used in rendering your website. The new styles are removed, resulting in a smaller, more optimized CSS file.

UnCSS is available as a command-line tool or a plugin for popular build tools like Grunt and Gulp. Online versions of the device allow you to upload your HTML and CSS files for analysis.

Another similar tool is the PurifyCSS website: https://github.com/purifycss/purifycss, which works similarly and helps you remove unused CSS from your website.

Using tools like UnCSS and PurifyCSS can significantly improve the performance of your website by reducing the size of your CSS file and eliminating unnecessary styles.
UnCSS will not help me with a dynamic website.