Some text appears on top of the page when demo.html is loaded

[sebastiantinu1677]

Describe the bug
Some text appears on top of the page when demo.html is loaded

To Reproduce
Steps to reproduce the behavior:

1. Click on 'http://localhost:3000/examples/browser/demo.html'

Expected behavior
No text appears on top of the page

Screenshots
If applicable, add screenshots to help explain your problem.