How to configure csso for gulp with structure change?

Question

css

I csso my project, it minifies main.css but doesn't remove overridden properties and doesn't merge blocks with common properties. i.e.: was margin-top: 1px; margin-rigt: 1px; margin-bottom: 1px; => became margin: 1px;
How to setup csso? How I suppose this should be done in package.json, but in which one? If you have an answer, please attach a screenshot. I will be grateful. Thanks in advance.

Answer 1

Use CleanCSS, it cleans much better. Proof cssbench
No, you shouldn't even go there if you don't know what it's for. This is a simple file manifest, no settings are stored there.
If you really set it up, then in the task of gallp.