Code typing error

Tell us what’s happening:
I am having trouble with my first test, my code is correct but it doesnt show me the results.

Your code so far

<h1>Hello World</h1>

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36 Edge/15.15063.

Link to the challenge:

are you maybe using edge, explorer or safari as browser?
try using a different browser than those, making sure it is up to date