Find unused CSS and JS code with the new Coverage tab. When you load or run a page, the tab tells you how much code was used, versus how much was loaded. You can reduce the size of your pages by only shipping the code that you need.
https://goo.gl/imxSqG
Jun20
What Does a Well-Documented CSS Codebase Look Like?
In the front-end community, there is a lot of attention related to documenting JavaScript. That's not so much the case with CSS. Often times I feel like lost when I join a project with minimal or no CSS documentation.
https://css-tricks.com/well-documented-css-codebase-look-like/
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