Learn CSS Colors by Building a Set of Colored Markers - Step 1

Tell us what’s happening:
Describe your issue in detail here.
I have the code right I thought. Not sure what’s wrong with my input

Your code so far

<!DOCTYPE html>

<html lang="en"/>

Your browser information:

User Agent is: Mozilla/5.0 (iPhone; CPU iPhone OS 15_6_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.6.1 Mobile/15E148 Safari/604.1

Challenge: Learn CSS Colors by Building a Set of Colored Markers - Step 1

Link to the challenge:

Perhaps check again about what is needed to add a html element.
Hint: It is not a single tag