UnCSS

How many times have you faced a situation where some classes/selectors are not used in HTML but are described in CSS code? This happens every time your project is changed or redesigned. For example, your task is to remove some section and add a few more lines in the HTML code. So you will add some CSS code and then remove some of it. But are you sure that the CSS code doesn't contain unused CSS portions of code? UnCSS will help you to finish this task. To install it, you need to execute this command:

npm install -g uncss

Let's take a look at the flags used in the npm command:

Flag	Description
-g	Global installation
--save	Local installation These packages will appear in package.json in the section dependencies. These packages are needed to run your app in production.
--save-dev	Local installation These packages will appear in package.json in the section devDependencies. These packages are needed for development and testing processes.

Integrating UnCSS in Gulp

First,...