Responsive Web Design Projects - Build a Product Landing Page

I posted my final project to here as well: https://codepen.io/pwoz/pen/yxZQNG

Objective: Build a CodePen.io app that is functionally similar to this: https://codepen.io/freeCodeCamp/full/RKRbwL

1. User Story #1: My product landing page should have a header element with a corresponding id="header".
2. User Story #2: I can see an image within the header element with a corresponding id="header-img". A company logo would make a good image here.
3. User Story #3: Within the #header element I can see a nav element with a corresponding id="nav-bar".
4. User Story #4: I can see at least three clickable elements inside the nav element, each with the class nav-link.
5. User Story #5: When I click a .nav-link button in the nav element, I am taken to the corresponding section of the landing page.
6. User Story #6: I can watch an embedded product video with id="video".
7. User Story #7: My landing page has a form element with a corresponding id="form".
8. User Story #8: Within the form, there is an input field with id="email" where I can enter an email address.
9. User Story #9: The #email input field should have placeholder text to let the user know what the field is for.
10. User Story #10: The #email input field uses HTML5 validation to confirm that the entered text is an email address.
11. User Story #11: Within the form, there is a submit input with a corresponding id="submit".
12. User Story #12: When I click the #submit element, the email is submitted to a static page (use this mock URL: https://www.freecodecamp.com/email-submit) that confirms the email address was entered and that it posted successfully.
13. User Story #13: The navbar should always be at the top of the viewport.
14. User Story #14: My product landing page should have at least one media query.
15. User Story #15: My product landing page should utilize CSS flexbox at least once.