Your form looks good @bemvy. Some things to revisit;
Codepen provides the boilerplate for you. It only expects the code you’d put within the body element in the HTML editor. (No need to include the body tags). For anything you want to add to the <head> element click on the ‘Settings’ button, then HTML and add it into the ‘Stuff for <head>’ box.
Mentioning because you don’t need the html tags but mainly mentioning because some of what you have in the ‘Stuff for <head>’ box is incorrect. Nothing in there would get styled and there would be no div or p elements in the head element. Review this for an understanding of the HTML boilerplate tags.
I really like your design, the dotted border makes it look like a movie reel!
Roma’s suggestions will help a lot. For your boxes choosing your favorite director and movie, if you added a “None of these” option you wouldn’t be locking someone into a choice they may not want to make while still having it a required field.