How to put a text on full screen video online  ?

1. Upload a video  as a background
2. Open your plain text file with any text editor application
3. As you want to display the text on full screen, double-click  in the top left corner of  the canvas and paste your plain text  inside the input field   
4.  In the top left corner this icon     should appear
5. To change the font size click a few times on the visual effects button   
6. Change the color    if you want
7. Click once on the down right corner of the canvas   
8.  Record your video 
9. The text will start to display from the top of the screen
10. When the text is ended the video will be  paused by itself   
11. Download the video with full screen text over