My test is not running

Tell us what’s happening:

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/64.0.3282.140 Safari/537.36 Edge/17.17134.

Link to the challenge:

Your code runs for me.

Try different browser.

Microsoft Edge and Internet Explorer do not have some of the latest features which Free Code Camp uses in the curriculum testing software, so you must use a browser like Chrome.