How to change the game window size in an HTML5 game?

Once I have an HTML5 project working on a site, how do I change the game window size? I’m guessing I have to edit the HMTL document but what needs changed.

Due to the large volume of questions and comments concerning the Engine, we did not have a to respond to your post at the time you submitted it. However, if you are still interested, the following is our documentation on HTML5 in UE4: [HTML5 Game Development][1]

While I do not see any documentation providing this specific information, please check out [this link][2].

Thanks!

Sharing and Releasing Projects for Unreal Engine | Unreal Engine 5.1 Documentation
[2]: http://