Doubt in CSS part of the webinar

When mentor applies CSS to the written unordered lists, it applies to the whole background part of the lists, But when I apply the same style background color to the same lists, it applies just to the bullets of lists not in just the whole page. Please resolve my issue. Refer to 2:06:50 to the webinar.

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Here is the github repo link and the files in which I am facing problem are “css inheritance.html” and “css inheritance.css”

In the css inheritance.html page, I have doubt in the last written unordered lists.

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