I need the CSS file location for Elemental Theme

I need help locating the CSS File for Elemental theme. I like the theme. but I need to change some colors especially for the home page.
Thanks for helping.

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MrKDilkington replied on at Permalink Reply
Hi bookerzm,

The CSS file path for the default Elemental theme is this:

Editing this file directly requires an understanding of Less (http://lesscss.org/features/ ) and knowing that any changes made to it will be overridden when you update concrete5.

To prevent the CSS files from being overridden, you will need to make a copy of the theme.

A simpler alternative to all of this is to add CSS to the Customize CSS section instead.
Toolbar > Page Settings (gear icon) > Design > Theme > Customize > Custom CSS gear icon button