Running tests is stuck

I insert the code and when I press run the Tests it does nothing it says down running tests and it stands still I left it run for couple of minutes and nothing and there is no possible mistake in
<h1>Hello World</h1> page is bot frozen I can edit code it just wont to go to next page

What browser are you using? What version is it?

Microsoft Edge Newest verzion

Free Code Camp has been updated to use newer technologies. It makes the application much faster and it means that we can go much longer without having to do a huge migration like the recent one. However, Edge, Internet Explorer, and Safari are very bad about choosing not to adhere to standards and support new functionality in JS and CSS. Right now, that means that these browsers exhibit lots of unexpected behavior. If you become a web developer you will come to hate these browsers with every fiber of your being.

so I need to download other browser ok which one is the best

I recommend Chrome, but Firefox is also a good option.

BRB downloading browser

working now on chrome thanks for help bye

I’m glad to hear it. Happy coding!