codepen only expects the code you’d put within the <body> </body> tags in HTML. (No need to include the body tags). For anything you want to add to the <head> click on the ‘Settings’ button and add it into the ‘Stuff for <head>’ box.
codepen provides validators for HTML, CSS and JS. Click on the down arrow in the upper right of each section and then click on the respective ‘Analyze’ link
Survey form;
if you’ve ever filled out a form on-line you may have noticed that required fields are marked with an asterisk (*). If it’s not required, not mark it as such.
don’t use <br> to force spacing. Use margin and/or padding in CSS
make it so users can click on the radio buttons and check box labels
the Submit button is hard to read. Black on dark blue is not a good color choice.
change the cursor to a pointer when hovering over the Submit button
Product Landing;
navbar covers the section the user is brought to. Think about adding some padding to each section
on small screens the navbar covers the text on the page
color choices again. Dark blue and black don’t mix
make the email field required
Personal Porfolio;
this appears to be your Tribute page (that’s okay…you just misnamed it. You can edit your post and fix that.)