Someone pls check and help with this css layout. Thank you.

1. I have here my url - https://html-css-js.com/ (what I have done so far)

2. Requirements - https://byui-cse.github.io/wdd230-course/lesson01/aa-course-homepage-01.html

3. Expected Result: https://byui-cse.github.io/wdd230-course/lesson01/aa-homepage-screenshots-01.html (layout)

The CSS is where I am finding it hard to get it right...so its under requirments.(2)