Well, looking at the first two errors:
Error : Element
head is missing a required instance of child element
Error : Stray end tag
And looking at the relevant code:
<link rel="stylesheet" href="nandossurvey.css">
<h1 id="title">Nando's Survey</h1>
The first error is telling you that your
head section is missing a
title element. (Giving your page title a title id isn’t the same thing. This is a string that will not appear on the screen but will show up in the browser tab. (Which may not work on codepen.) Refer to the docs.
The second error is because you have put a page element in your
head - it doesn’t go there but in the body.
Error : Bad value
Full name for attribute
for on element
label : An ID must not contain whitespace.
should be pretty self-explanatory.
Fixing those makes those errors go away. You should just work through the errors and do some googling (a developer’s most valuable tool) and check back if you can’t figure one of them out.