Create less file for custom Theme

Question

How to create new *.less file in Magento 2.3 project ?

Here is my existing Theme:

Here is my existing less file that DOES NOT work:

Nothing is work here:

My question is how to add custom less code/file to custom Theme?

any help would be extremely appreciated.

Answer 1

You have created the less file properly,

Run the Below command and check: (If grunt is installed properly, then your changes will reflect)

grunt refresh 
grunt less:YourThemeName

Answer 2

I have a review your question and I found that you have done the wrong step to override _extend.less file.

The correct way to override _extend.less file:

Go in your theme Magento_Theme\web\css\source create _extend.less and put your changes in that.

Thanks:)