kapwing.com
This quiz misses the idea that humans perceive the same values differently in different contexts. A button with 5px border radius might not feel “round” enough in a UI where everything else is very “round”. Or if you have two colours of the same hex value, except that one is surrounded by white pixels, and the other is surrounded by black ones, then it is unlikely that the colour will be perceived the same way in both cases (see the Checkerboard illusion). Identifying fonts immediately by just looking at them (which I can do well) has been a neat party trick, but has never found utility in my work.
A designer’s strength is not knowing these values by rote, but having the sensitivity to understand the tools at our disposal (including knowing how human perception works) and using them to create something functional and beautiful.
This “test” does not evaluate any of that.
I think you missed the word “fun”
Perhaps a better name would be "Are you a web designer?"
I noticed that, but still only got 9/12.
I got the color, radius, border, and font questions correct.
The opacity, delay, and aspect ratio ones are slightly pointless since they are rarely any particular exact value (except for the square one).
The questions I think are completely irrelevant are the AI images and the Google logo ones.
EDIT: also worth pointing out none of these skills matter when I can just grep the CSS and inspect the computed values for checking consistency across all browsers. Judging by eye is not really all that helpful.
"The correct answer is B. In case you're curious, B has a border radius of 5px, C is 15px, and D is 7px." should likely be something about opacity.
I think it's meant as one big trick question: a web designer can use the dev tools to inspect the elements on the page.
None of these questions represent a barrier to being a competent web designer.