This app have a bug

Tell us what’s happening:

am new at this on html I tell me to do to pass the test on this challenge, change your h1 element’s text to say “Hello World”.
I did but it said at the bottom of the screen. // running tests. for long time how do I fix that??
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/18.17763.

Link to the challenge:

The challenge tests do not work well on Safari, Edge, or Internet Explorer. The curriculum works best when using Chrome.

Let us know if you are still having trouble when using Chrome.