Ffirst challenge: Run Test button doesn't proceed to next challenge

I’m at first challenge, which is:

<h1>Hello World</h1>

I typed everything correctly and clicked Run Test, yet didn’t proceed to next challenge.
Also, nothing on the emulator phone screen.

I’ve edited your post for readability. When you enter a code block into the forum, remember to precede it with a line of three backticks and follow it with a line of three backticks to make easier to read. See this post to find the backtick on your keyboard. The “preformatted text” tool in the editor (</>) will also add backticks around text.

markdown_Forums

Code looks fine. You may have to close the browser and come back in or refresh your browser and try to the run the tests again.