I used some (Flex-Box and Media-Queries)

To center a content on a page, declare the following in the body: body{min-height:100vh; display: flex; justify-content center; align-items center;}. Use the colors that were given in the styleguide.md in the starter folder. For a sub div in the main replace the id with a class. In your code the most divs must have the same padding, group all those divs by their classes or id s and give the m one padding value. no need to give the #twoDivs color of white just declare display: flex; There is no need for a margin value in your media query, give it the body a percentage width value of either 80 or 90. I enjoyed reading your code. Hope am helpful. HAPPY CODING

The overall look of the website is great to me. Suggestion: When you write CSS properties try to write them according to an alphabetical manner that will increase the readability o the code.