Testimonials grid section

Hi. Congratulation for doing this challenge. I wanna mention some points in your challenge:

1. header should be outside the main tag and as a sibling of main and mostly use for logo and nav items. here I think using header is wrong.
2. Each page only have one h1. Because It represent as a page heading. Also remember other levels of headings should increase one by one.
3. Your .container needs a max-width because if you increase your width then your container also starts stretching and never stops.